1961972624 has 20 divisors (see below), whose sum is σ = 3816474480. Its totient is φ = 977076000.

The previous prime is 1961972599. The next prime is 1961972627. The reversal of 1961972624 is 4262791691.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1961972627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240254 + ... + 248285.

It is an arithmetic number, because the mean of its divisors is an integer number (190823724).

Almost surely, 2^1961972624 is an apocalyptic number.

It is an amenable number.

1961972624 is a deficient number, since it is larger than the sum of its proper divisors (1854501856).

1961972624 is a wasteful number, since it uses less digits than its factorization.

1961972624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488798 (or 488792 counting only the distinct ones).

The product of its digits is 326592, while the sum is 47.

The square root of 1961972624 is about 44294.1601568423. The cubic root of 1961972624 is about 1251.8846501669.

The spelling of 1961972624 in words is "one billion, nine hundred sixty-one million, nine hundred seventy-two thousand, six hundred twenty-four".