1961372370 has 32 divisors (see below), whose sum is σ = 4869616320. Its totient is φ = 504996800.

The previous prime is 1961372363. The next prime is 1961372393. The reversal of 1961372370 is 732731691.

It is a happy 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, 1126356 + ... + 1128095.

It is an arithmetic number, because the mean of its divisors is an integer number (152175510).

Almost surely, 2^1961372370 is an apocalyptic number.

1961372370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1961372370 is an abundant number, since it is smaller than the sum of its proper divisors (2908243950).

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

1961372370 is a wasteful number, since it uses less digits than its factorization.

1961372370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2254490.

The product of its (nonzero) digits is 47628, while the sum is 39.

The square root of 1961372370 is about 44287.3838694498. The cubic root of 1961372370 is about 1251.7569682264.

The spelling of 1961372370 in words is "one billion, nine hundred sixty-one million, three hundred seventy-two thousand, three hundred seventy".