1387145573 has 8 divisors (see below), whose sum is σ = 1525757376. Its totient is φ = 1261040220.

The previous prime is 1387145567. The next prime is 1387145581. The reversal of 1387145573 is 3755417831.

It is not a de Polignac number, because 1387145573 - 2⁶ = 1387145509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387145563) 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, 519761 + ... + 522422.

It is an arithmetic number, because the mean of its divisors is an integer number (190719672).

Almost surely, 2^1387145573 is an apocalyptic number.

It is an amenable number.

1387145573 is a deficient number, since it is larger than the sum of its proper divisors (138611803).

1387145573 is an equidigital number, since it uses as much as digits as its factorization.

1387145573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042216 (or 1042194 counting only the distinct ones).

The product of its digits is 352800, while the sum is 44.

The square root of 1387145573 is about 37244.4032439775. The cubic root of 1387145573 is about 1115.2545747819.

The spelling of 1387145573 in words is "one billion, three hundred eighty-seven million, one hundred forty-five thousand, five hundred seventy-three".