1961079530 has 16 divisors (see below), whose sum is σ = 3643812864. Its totient is φ = 759127440.

The previous prime is 1961079413. The next prime is 1961079581. The reversal of 1961079530 is 359701691.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3162722 + ... + 3163341.

It is an arithmetic number, because the mean of its divisors is an integer number (227738304).

Almost surely, 2^1961079530 is an apocalyptic number.

1961079530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1961079530 is a deficient number, since it is larger than the sum of its proper divisors (1682733334).

1961079530 is a wasteful number, since it uses less digits than its factorization.

1961079530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6326101.

The product of its (nonzero) digits is 51030, while the sum is 41.

The square root of 1961079530 is about 44284.0776126138. The cubic root of 1961079530 is about 1251.6946678424.

The spelling of 1961079530 in words is "one billion, nine hundred sixty-one million, seventy-nine thousand, five hundred thirty".