1197655387 has 8 divisors (see below), whose sum is σ = 1238337072. Its totient is φ = 1157520000.

The previous prime is 1197655357. The next prime is 1197655391. The reversal of 1197655387 is 7835567911.

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 1197655387 - 2⁷ = 1197655259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1197655357) 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, 132114 + ... + 140887.

It is an arithmetic number, because the mean of its divisors is an integer number (154792134).

Almost surely, 2^1197655387 is an apocalyptic number.

1197655387 is a deficient number, since it is larger than the sum of its proper divisors (40681685).

1197655387 is a wasteful number, since it uses less digits than its factorization.

1197655387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273149.

The product of its digits is 1587600, while the sum is 52.

The square root of 1197655387 is about 34607.1580312513. The cubic root of 1197655387 is about 1061.9660281987.

The spelling of 1197655387 in words is "one billion, one hundred ninety-seven million, six hundred fifty-five thousand, three hundred eighty-seven".