1081933957 has 8 divisors (see below), whose sum is σ = 1165633280. Its totient is φ = 998302320.

The previous prime is 1081933933. The next prime is 1081933973. The reversal of 1081933957 is 7593391801.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1081933957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081933157) 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, 19144 + ... + 50302.

It is an arithmetic number, because the mean of its divisors is an integer number (145704160).

Almost surely, 2^1081933957 is an apocalyptic number.

It is an amenable number.

1081933957 is a deficient number, since it is larger than the sum of its proper divisors (83699323).

1081933957 is a wasteful number, since it uses less digits than its factorization.

1081933957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33843.

The product of its (nonzero) digits is 204120, while the sum is 46.

The square root of 1081933957 is about 32892.7645083231. The cubic root of 1081933957 is about 1026.5976139231.

The spelling of 1081933957 in words is "one billion, eighty-one million, nine hundred thirty-three thousand, nine hundred fifty-seven".