1952899440 has 80 divisors (see below), whose sum is σ = 6262768800. Its totient is φ = 502813696.

The previous prime is 1952899409. The next prime is 1952899453. The reversal of 1952899440 is 449982591.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133335 + ... + 147254.

It is an arithmetic number, because the mean of its divisors is an integer number (78284610).

Almost surely, 2^1952899440 is an apocalyptic number.

1952899440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1952899440 is an abundant number, since it is smaller than the sum of its proper divisors (4309869360).

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

1952899440 is a wasteful number, since it uses less digits than its factorization.

1952899440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280634 (or 280628 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 51.

The square root of 1952899440 is about 44191.6218303877. The cubic root of 1952899440 is about 1249.9518786808.

The spelling of 1952899440 in words is "one billion, nine hundred fifty-two million, eight hundred ninety-nine thousand, four hundred forty".