1906012172 has 12 divisors (see below), whose sum is σ = 3357908400. Its totient is φ = 946609776.

The previous prime is 1906012159. The next prime is 1906012183. The reversal of 1906012172 is 2712106091.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1598408 + ... + 1599599.

It is an arithmetic number, because the mean of its divisors is an integer number (279825700).

Almost surely, 2^1906012172 is an apocalyptic number.

It is an amenable number.

1906012172 is a deficient number, since it is larger than the sum of its proper divisors (1451896228).

1906012172 is a wasteful number, since it uses less digits than its factorization.

1906012172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3198160 (or 3198158 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 1906012172 is about 43657.8993081435. The cubic root of 1906012172 is about 1239.8673487998.

The spelling of 1906012172 in words is "one billion, nine hundred six million, twelve thousand, one hundred seventy-two".