1387874285 has 48 divisors (see below), whose sum is σ = 2047184640. Its totient is φ = 898128000.

The previous prime is 1387874269. The next prime is 1387874311. The reversal of 1387874285 is 5824787831.

It is not a de Polignac number, because 1387874285 - 2⁴ = 1387874269 is a prime.

It is a super-2 number, since 2×1387874285² = 3852390061928522450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1847660 + ... + 1848410.

It is an arithmetic number, because the mean of its divisors is an integer number (42649680).

Almost surely, 2^1387874285 is an apocalyptic number.

It is an amenable number.

1387874285 is a deficient number, since it is larger than the sum of its proper divisors (659310355).

1387874285 is a wasteful number, since it uses less digits than its factorization.

1387874285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1179 counting only the distinct ones).

The product of its digits is 3010560, while the sum is 53.

The square root of 1387874285 is about 37254.1847984894. The cubic root of 1387874285 is about 1115.4498335773.

The spelling of 1387874285 in words is "one billion, three hundred eighty-seven million, eight hundred seventy-four thousand, two hundred eighty-five".