1189313957 has 8 divisors (see below), whose sum is σ = 1281070560. Its totient is φ = 1097596080.

The previous prime is 1189313947. The next prime is 1189314079. The reversal of 1189313957 is 7593139811.

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 1189313957 - 2⁶ = 1189313893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189313947) 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, 101282 + ... + 112412.

It is an arithmetic number, because the mean of its divisors is an integer number (160133820).

Almost surely, 2^1189313957 is an apocalyptic number.

It is an amenable number.

1189313957 is a deficient number, since it is larger than the sum of its proper divisors (91756603).

1189313957 is a wasteful number, since it uses less digits than its factorization.

1189313957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19363.

The product of its digits is 204120, while the sum is 47.

The square root of 1189313957 is about 34486.4314912401. The cubic root of 1189313957 is about 1059.4948218753.

The spelling of 1189313957 in words is "one billion, one hundred eighty-nine million, three hundred thirteen thousand, nine hundred fifty-seven".