1945642152 has 32 divisors (see below), whose sum is σ = 4908736800. Its totient is φ = 642596544.

The previous prime is 1945642141. The next prime is 1945642169. The reversal of 1945642152 is 2512465491.

It is a super-2 number, since 2×1945642152² = 7571046767278382208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1945642152.

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, 369258 + ... + 374489.

It is an arithmetic number, because the mean of its divisors is an integer number (153398025).

Almost surely, 2^1945642152 is an apocalyptic number.

1945642152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1945642152 is an abundant number, since it is smaller than the sum of its proper divisors (2963094648).

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

1945642152 is a wasteful number, since it uses less digits than its factorization.

1945642152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743865 (or 743861 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 1945642152 is about 44109.4338208960. The cubic root of 1945642152 is about 1248.4016160996.

The spelling of 1945642152 in words is "one billion, nine hundred forty-five million, six hundred forty-two thousand, one hundred fifty-two".