1961759532 has 12 divisors (see below), whose sum is σ = 4577438936. Its totient is φ = 653919840.

The previous prime is 1961759509. The next prime is 1961759533. The reversal of 1961759532 is 2359571691.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1961759532² = 7697000922785718048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1961759533) 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, 81739969 + ... + 81739992.

Almost surely, 2^1961759532 is an apocalyptic number.

1961759532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1961759532 is an abundant number, since it is smaller than the sum of its proper divisors (2615679404).

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

1961759532 is a wasteful number, since it uses less digits than its factorization.

1961759532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163479968 (or 163479966 counting only the distinct ones).

The product of its digits is 510300, while the sum is 48.

The square root of 1961759532 is about 44291.7546728508. The cubic root of 1961759532 is about 1251.8393256707.

The spelling of 1961759532 in words is "one billion, nine hundred sixty-one million, seven hundred fifty-nine thousand, five hundred thirty-two".