1911442972 has 48 divisors (see below), whose sum is σ = 3447747072. Its totient is φ = 926976960.

The previous prime is 1911442969. The next prime is 1911443003. The reversal of 1911442972 is 2792441191.

It is a super-2 number, since 2×1911442972² = 7307228470416385568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7267713 + ... + 7267975.

It is an arithmetic number, because the mean of its divisors is an integer number (71828064).

Almost surely, 2^1911442972 is an apocalyptic number.

It is an amenable number.

1911442972 is a deficient number, since it is larger than the sum of its proper divisors (1536304100).

1911442972 is a wasteful number, since it uses less digits than its factorization.

1911442972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658 (or 656 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The square root of 1911442972 is about 43720.0522872514. The cubic root of 1911442972 is about 1241.0438167110.

The spelling of 1911442972 in words is "one billion, nine hundred eleven million, four hundred forty-two thousand, nine hundred seventy-two".