1902091955 has 8 divisors (see below), whose sum is σ = 2356139904. Its totient is φ = 1472587200.

The previous prime is 1902091943. The next prime is 1902091963. The reversal of 1902091955 is 5591902091.

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

It is a de Polignac number, because none of the positive numbers 2^k-1902091955 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6135626 + ... + 6135935.

It is an arithmetic number, because the mean of its divisors is an integer number (294517488).

Almost surely, 2^1902091955 is an apocalyptic number.

1902091955 is a deficient number, since it is larger than the sum of its proper divisors (454047949).

1902091955 is a wasteful number, since it uses less digits than its factorization.

1902091955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12271597.

The product of its (nonzero) digits is 36450, while the sum is 41.

The square root of 1902091955 is about 43612.9792034436. The cubic root of 1902091955 is about 1239.0167272287.

The spelling of 1902091955 in words is "one billion, nine hundred two million, ninety-one thousand, nine hundred fifty-five".