1373685480 has 80 divisors (see below), whose sum is σ = 4617120420. Its totient is φ = 366315264.

The previous prime is 1373685479. The next prime is 1373685487. The reversal of 1373685480 is 845863731.

1373685480 is a `hidden beast` number, since 137 + 36 + 8 + 5 + 480 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1373591844 + 93636 = 37062^2 + 306^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1373685487) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 208749 + ... + 215228.

Almost surely, 2^1373685480 is an apocalyptic number.

1373685480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1373685480 is an abundant number, since it is smaller than the sum of its proper divisors (3243434940).

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

1373685480 is a wasteful number, since it uses less digits than its factorization.

1373685480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424000 (or 423987 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 1373685480 is about 37063.2632130524. The cubic root of 1373685480 is about 1111.6355727478.

The spelling of 1373685480 in words is "one billion, three hundred seventy-three million, six hundred eighty-five thousand, four hundred eighty".