1197439136 has 12 divisors (see below), whose sum is σ = 2357458362. Its totient is φ = 598719552.

The previous prime is 1197439129. The next prime is 1197439231. The reversal of 1197439136 is 6319347911.

It can be written as a sum of positive squares in only one way, i.e., 1127616400 + 69822736 = 33580^2 + 8356^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18709955 + ... + 18710018.

Almost surely, 2^1197439136 is an apocalyptic number.

1197439136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1197439136 is a deficient number, since it is larger than the sum of its proper divisors (1160019226).

1197439136 is an equidigital number, since it uses as much as digits as its factorization.

1197439136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37419983 (or 37419975 counting only the distinct ones).

The product of its digits is 122472, while the sum is 44.

The square root of 1197439136 is about 34604.0335221199. The cubic root of 1197439136 is about 1061.9021074633.

The spelling of 1197439136 in words is "one billion, one hundred ninety-seven million, four hundred thirty-nine thousand, one hundred thirty-six".