1197662144 has 56 divisors (see below), whose sum is σ = 2779337088. Its totient is φ = 501338880.

The previous prime is 1197662143. The next prime is 1197662161. The reversal of 1197662144 is 4412667911.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×1197662144² = 2868789222341353472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197662143) 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, 11822 + ... + 50349.

Almost surely, 2^1197662144 is an apocalyptic number.

1197662144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1197662144 is an abundant number, since it is smaller than the sum of its proper divisors (1581674944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1197662144 is an equidigital number, since it uses as much as digits as its factorization.

1197662144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62233 (or 62223 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 1197662144 is about 34607.2556554258. The cubic root of 1197662144 is about 1061.9680253483.

The spelling of 1197662144 in words is "one billion, one hundred ninety-seven million, six hundred sixty-two thousand, one hundred forty-four".