1385593740 has 72 divisors (see below), whose sum is σ = 4206628608. Its totient is φ = 369169920.

The previous prime is 1385593691. The next prime is 1385593799. The reversal of 1385593740 is 473955831.

1385593740 is a `hidden beast` number, since 13 + 8 + 5 + 593 + 7 + 40 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 262164 + ... + 267396.

Almost surely, 2^1385593740 is an apocalyptic number.

1385593740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1385593740 is an abundant number, since it is smaller than the sum of its proper divisors (2821034868).

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

1385593740 is a wasteful number, since it uses less digits than its factorization.

1385593740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6719 (or 6714 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 1385593740 is about 37223.5643107965. The cubic root of 1385593740 is about 1114.8385322565.

The spelling of 1385593740 in words is "one billion, three hundred eighty-five million, five hundred ninety-three thousand, seven hundred forty".