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1081394007 = 31392593271
BaseRepresentation
bin100000001110100…
…1100001101010111
32210100211111200220
41000131030031113
54203314102012
6255150005423
735540461131
oct10035141527
92710744626
101081394007
11505467361
122621a6873
13143067c15
14a3898051
1564e0d08c
hex4074c357

1081394007 has 8 divisors (see below), whose sum is σ = 1452232320. Its totient is φ = 715742520.

The previous prime is 1081393981. The next prime is 1081394009. The reversal of 1081394007 is 7004931801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1081394007 - 27 = 1081393879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081394009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1296219 + ... + 1297052.

It is an arithmetic number, because the mean of its divisors is an integer number (181529040).

Almost surely, 21081394007 is an apocalyptic number.

1081394007 is a deficient number, since it is larger than the sum of its proper divisors (370838313).

1081394007 is a wasteful number, since it uses less digits than its factorization.

1081394007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593413.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 1081394007 is about 32884.5557519027. Note that the first 3 decimals coincide. The cubic root of 1081394007 is about 1026.4268075582.

The spelling of 1081394007 in words is "one billion, eighty-one million, three hundred ninety-four thousand, seven".

Divisors: 1 3 139 417 2593271 7779813 360464669 1081394007