1815755952 has 80 divisors (see below), whose sum is σ = 4742375040. Its totient is φ = 598626816.

The previous prime is 1815755933. The next prime is 1815755959. The reversal of 1815755952 is 2595575181.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1815755959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2001483 + ... + 2002389.

It is an arithmetic number, because the mean of its divisors is an integer number (59279688).

Almost surely, 2^1815755952 is an apocalyptic number.

1815755952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1815755952 is an abundant number, since it is smaller than the sum of its proper divisors (2926619088).

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

1815755952 is a wasteful number, since it uses less digits than its factorization.

1815755952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330 (or 1324 counting only the distinct ones).

The product of its digits is 630000, while the sum is 48.

The square root of 1815755952 is about 42611.6879740758. The cubic root of 1815755952 is about 1219.9793851215.

The spelling of 1815755952 in words is "one billion, eight hundred fifteen million, seven hundred fifty-five thousand, nine hundred fifty-two".