1918701952 has 32 divisors (see below), whose sum is σ = 3988612080. Its totient is φ = 917638656.

The previous prime is 1918701943. The next prime is 1918701977. The reversal of 1918701952 is 2591078191.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1918701952² = 7362834361217220608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1918701899 and 1918701908.

It is a congruent number.

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, 322923 + ... + 328810.

Almost surely, 2^1918701952 is an apocalyptic number.

It is an amenable number.

1918701952 is an abundant number, since it is smaller than the sum of its proper divisors (2069910128).

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

1918701952 is an equidigital number, since it uses as much as digits as its factorization.

1918701952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651770 (or 651758 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 43.

The square root of 1918701952 is about 43802.9902175639. The cubic root of 1918701952 is about 1242.6128463943.

The spelling of 1918701952 in words is "one billion, nine hundred eighteen million, seven hundred one thousand, nine hundred fifty-two".