1906156122 has 32 divisors (see below), whose sum is σ = 4120122048. Its totient is φ = 584430336.

The previous prime is 1906156103. The next prime is 1906156141. The reversal of 1906156122 is 2216516091.

It is an interprime number because it is at equal distance from previous prime (1906156103) and next prime (1906156141).

It is a super-2 number, since 2×1906156122² = 7266862322876157768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21103 + ... + 65250.

It is an arithmetic number, because the mean of its divisors is an integer number (128753814).

Almost surely, 2^1906156122 is an apocalyptic number.

1906156122 is an abundant number, since it is smaller than the sum of its proper divisors (2213965926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1906156122 is a wasteful number, since it uses less digits than its factorization.

1906156122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86654.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1906156122 is about 43659.5478904672. The cubic root of 1906156122 is about 1239.8985613343.

The spelling of 1906156122 in words is "one billion, nine hundred six million, one hundred fifty-six thousand, one hundred twenty-two".