147473138 has 18 divisors (see below), whose sum is σ = 229403853. Its totient is φ = 71100360.

The previous prime is 147473111. The next prime is 147473141. The reversal of 147473138 is 831374741.

It can be written as a sum of positive squares in 2 ways, for example, as 129436129 + 18037009 = 11377^2 + 4247^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8587.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 532256 + ... + 532532.

Almost surely, 2^147473138 is an apocalyptic number.

147473138 is a deficient number, since it is larger than the sum of its proper divisors (81930715).

147473138 is an frugal number, since it uses more digits than its factorization.

147473138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618 (or 310 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 147473138 is about 12143.8518600978. The cubic root of 147473138 is about 528.3288264887.

Multiplying 147473138 by its product of digits (56448), we get a square (8324563693824 = 2885232²).

The spelling of 147473138 in words is "one hundred forty-seven million, four hundred seventy-three thousand, one hundred thirty-eight".