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1316991061 = 19376727961
BaseRepresentation
bin100111001111111…
…1011000001010101
310101210011002002201
41032133323001111
510144122203221
6334403404501
744431145041
oct11637730125
93353132081
101316991061
11616452971
12309083731
1317cb06969
14c6ca5021
157a949891
hex4e7fb055

1316991061 has 16 divisors (see below), whose sum is σ = 1445076160. Its totient is φ = 1195793280.

The previous prime is 1316991059. The next prime is 1316991079. The reversal of 1316991061 is 1601996131.

It is a cyclic number.

It is not a de Polignac number, because 1316991061 - 21 = 1316991059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a deceptive number, since it divides R1316991060.

It is a self number, because there is not a number n which added to its sum of digits gives 1316991061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316991041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33121 + ... + 61081.

It is an arithmetic number, because the mean of its divisors is an integer number (90317260).

Almost surely, 21316991061 is an apocalyptic number.

It is an amenable number.

1316991061 is a deficient number, since it is larger than the sum of its proper divisors (128085099).

1316991061 is a wasteful number, since it uses less digits than its factorization.

1316991061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28084.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 1316991061 is about 36290.3714640674. The cubic root of 1316991061 is about 1096.1271688646.

The spelling of 1316991061 in words is "one billion, three hundred sixteen million, nine hundred ninety-one thousand, sixty-one".

Divisors: 1 19 37 67 703 1273 2479 27961 47101 531259 1034557 1873387 19656583 35594353 69315319 1316991061