1396748718 has 16 divisors (see below), whose sum is σ = 3103886160. Its totient is φ = 465582888.

The previous prime is 1396748699. The next prime is 1396748719. The reversal of 1396748718 is 8178476931.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 25865717 = 1396748718 / (1 + 3 + 9 + 6 + 7 + 4 + 8 + 7 + 1 + 8).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396748719) 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, 12932805 + ... + 12932912.

It is an arithmetic number, because the mean of its divisors is an integer number (193992885).

Almost surely, 2^1396748718 is an apocalyptic number.

1396748718 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1396748718 is an abundant number, since it is smaller than the sum of its proper divisors (1707137442).

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

1396748718 is a wasteful number, since it uses less digits than its factorization.

1396748718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25865728 (or 25865722 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 1396748718 is about 37373.1015303788. The cubic root of 1396748718 is about 1117.8222772126.

The spelling of 1396748718 in words is "one billion, three hundred ninety-six million, seven hundred forty-eight thousand, seven hundred eighteen".