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1081069917 = 32989139619
BaseRepresentation
bin100000001101111…
…1101000101011101
32210100020001010120
41000123331011131
54203223214132
6255135025153
735534641224
oct10033750535
92710201116
101081069917
11505265914
1226206b1b9
13142c83555
14a3811cbb
1564d9702c
hex406fd15d

1081069917 has 16 divisors (see below), whose sum is σ = 1507896000. Its totient is φ = 688037504.

The previous prime is 1081069903. The next prime is 1081069931. The reversal of 1081069917 is 7199601801.

It is an interprime number because it is at equal distance from previous prime (1081069903) and next prime (1081069931).

It is a cyclic number.

It is not a de Polignac number, because 1081069917 - 218 = 1080807773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081069817) 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, 62067 + ... + 77552.

It is an arithmetic number, because the mean of its divisors is an integer number (94243500).

Almost surely, 21081069917 is an apocalyptic number.

It is an amenable number.

1081069917 is a deficient number, since it is larger than the sum of its proper divisors (426826083).

1081069917 is a wasteful number, since it uses less digits than its factorization.

1081069917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139740.

The product of its (nonzero) digits is 27216, while the sum is 42.

The square root of 1081069917 is about 32879.6276894979. The cubic root of 1081069917 is about 1026.3242584721.

The spelling of 1081069917 in words is "one billion, eighty-one million, sixty-nine thousand, nine hundred seventeen".

Divisors: 1 3 29 87 89 267 2581 7743 139619 418857 4048951 12146853 12426091 37278273 360356639 1081069917