1961747670 has 32 divisors (see below), whose sum is σ = 4732108128. Its totient is φ = 520475648.

The previous prime is 1961747653. The next prime is 1961747707. The reversal of 1961747670 is 767471691.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160059 + ... + 171878.

It is an arithmetic number, because the mean of its divisors is an integer number (147878379).

Almost surely, 2^1961747670 is an apocalyptic number.

1961747670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1961747670 is an abundant number, since it is smaller than the sum of its proper divisors (2770360458).

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

1961747670 is a wasteful number, since it uses less digits than its factorization.

1961747670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332144.

The product of its (nonzero) digits is 444528, while the sum is 48.

The square root of 1961747670 is about 44291.6207651063. The cubic root of 1961747670 is about 1251.8368025364.

The spelling of 1961747670 in words is "one billion, nine hundred sixty-one million, seven hundred forty-seven thousand, six hundred seventy".