1179942381 has 12 divisors (see below), whose sum is σ = 1704728220. Its totient is φ = 786458880.

The previous prime is 1179942377. The next prime is 1179942383. The reversal of 1179942381 is 1832499711.

It can be written as a sum of positive squares in 2 ways, for example, as 537776100 + 642166281 = 23190^2 + 25341^2 .

It is not a de Polignac number, because 1179942381 - 2² = 1179942377 is a prime.

It is a super-2 number, since 2×1179942381² = 2784528044959898322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1179942383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41565 + ... + 63933.

It is an arithmetic number, because the mean of its divisors is an integer number (142060685).

Almost surely, 2^1179942381 is an apocalyptic number.

It is an amenable number.

1179942381 is a deficient number, since it is larger than the sum of its proper divisors (524785839).

1179942381 is a wasteful number, since it uses less digits than its factorization.

1179942381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28236 (or 28233 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 1179942381 is about 34350.2893874273. The cubic root of 1179942381 is about 1056.7046051896.

The spelling of 1179942381 in words is "one billion, one hundred seventy-nine million, nine hundred forty-two thousand, three hundred eighty-one".