1952987640 has 32 divisors (see below), whose sum is σ = 5858963280. Its totient is φ = 520796672.

The previous prime is 1952987587. The next prime is 1952987653. The reversal of 1952987640 is 467892591.

1952987640 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 8137329 + ... + 8137568.

Almost surely, 2^1952987640 is an apocalyptic number.

1952987640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1952987640 is an abundant number, since it is smaller than the sum of its proper divisors (3905975640).

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

1952987640 is a wasteful number, since it uses less digits than its factorization.

1952987640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16274911 (or 16274907 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 51.

The square root of 1952987640 is about 44192.6197458354. The cubic root of 1952987640 is about 1249.9706958464.

The spelling of 1952987640 in words is "one billion, nine hundred fifty-two million, nine hundred eighty-seven thousand, six hundred forty".