1961159076 has 36 divisors (see below), whose sum is σ = 5117292544. Its totient is φ = 632631600.

The previous prime is 1961159059. The next prime is 1961159087. The reversal of 1961159076 is 6709511691.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1961159076² = 7692289842754347552, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 877540 + ... + 879771.

Almost surely, 2^1961159076 is an apocalyptic number.

It is an amenable number.

1961159076 is an abundant number, since it is smaller than the sum of its proper divisors (3156133468).

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

1961159076 is a wasteful number, since it uses less digits than its factorization.

1961159076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757352 (or 1757347 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 45.

The square root of 1961159076 is about 44284.9757366988. The cubic root of 1961159076 is about 1251.7115915073.

It can be divided in two parts, 19611 and 59076, that added together give a palindrome (78687).

The spelling of 1961159076 in words is "one billion, nine hundred sixty-one million, one hundred fifty-nine thousand, seventy-six".