1347638864 has 80 divisors (see below), whose sum is σ = 3150631680. Its totient is φ = 550126080.

The previous prime is 1347638837. The next prime is 1347638869. The reversal of 1347638864 is 4688367431.

It is a super-2 number, since 2×1347638864² = 3632261015526420992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1347638869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76697 + ... + 92615.

It is an arithmetic number, because the mean of its divisors is an integer number (39382896).

Almost surely, 2^1347638864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1347638864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1575315840).

1347638864 is an abundant number, since it is smaller than the sum of its proper divisors (1802992816).

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

1347638864 is a wasteful number, since it uses less digits than its factorization.

1347638864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15988 (or 15982 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 50.

The square root of 1347638864 is about 36710.2010890706. The cubic root of 1347638864 is about 1104.5647402940.

The spelling of 1347638864 in words is "one billion, three hundred forty-seven million, six hundred thirty-eight thousand, eight hundred sixty-four".