1868149032 has 64 divisors (see below), whose sum is σ = 4837324800. Its totient is φ = 600592320.

The previous prime is 1868148991. The next prime is 1868149039. The reversal of 1868149032 is 2309418681.

It is not an unprimeable number, because it can be changed into a prime (1868149039) 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, 224319 + ... + 232497.

It is an arithmetic number, because the mean of its divisors is an integer number (75583200).

Almost surely, 2^1868149032 is an apocalyptic number.

1868149032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1868149032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2418662400).

1868149032 is an abundant number, since it is smaller than the sum of its proper divisors (2969175768).

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

1868149032 is a wasteful number, since it uses less digits than its factorization.

1868149032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8526 (or 8522 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 1868149032 is about 43222.0896301879. The cubic root of 1868149032 is about 1231.6023429177.

The spelling of 1868149032 in words is "one billion, eight hundred sixty-eight million, one hundred forty-nine thousand, thirty-two".