1961977570 has 16 divisors (see below), whose sum is σ = 4036068288. Its totient is φ = 672678000.

The previous prime is 1961977559. The next prime is 1961977607. The reversal of 1961977570 is 757791691.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14014056 + ... + 14014195.

It is an arithmetic number, because the mean of its divisors is an integer number (252254268).

Almost surely, 2^1961977570 is an apocalyptic number.

1961977570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1961977570 is an abundant number, since it is smaller than the sum of its proper divisors (2074090718).

1961977570 is a wasteful number, since it uses less digits than its factorization.

1961977570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28028265.

The product of its (nonzero) digits is 833490, while the sum is 52.

The square root of 1961977570 is about 44294.2159880949. The cubic root of 1961977570 is about 1251.8857021382.

The spelling of 1961977570 in words is "one billion, nine hundred sixty-one million, nine hundred seventy-seven thousand, five hundred seventy".