1187996441 has 8 divisors (see below), whose sum is σ = 1200813768. Its totient is φ = 1175200000.

The previous prime is 1187996423. The next prime is 1187996449. The reversal of 1187996441 is 1446997811.

It can be written as a sum of positive squares in 4 ways, for example, as 450330841 + 737665600 = 21221^2 + 27160^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1187996441 - 2⁶ = 1187996377 is a prime.

It is a super-2 number, since 2×1187996441² = 2822671087657332962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1187996441.

It is not an unprimeable number, because it can be changed into a prime (1187996449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126881 + ... + 135921.

It is an arithmetic number, because the mean of its divisors is an integer number (150101721).

Almost surely, 2^1187996441 is an apocalyptic number.

It is an amenable number.

1187996441 is a deficient number, since it is larger than the sum of its proper divisors (12817327).

1187996441 is a wasteful number, since it uses less digits than its factorization.

1187996441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10443.

The product of its digits is 435456, while the sum is 50.

The square root of 1187996441 is about 34467.3242506580. The cubic root of 1187996441 is about 1059.1034429781.

The spelling of 1187996441 in words is "one billion, one hundred eighty-seven million, nine hundred ninety-six thousand, four hundred forty-one".