1238787473 has 54 divisors (see below), whose sum is σ = 1635994962. Its totient is φ = 934496640.

The previous prime is 1238787457. The next prime is 1238787547. The reversal of 1238787473 is 3747878321.

It can be written as a sum of positive squares in only one way, i.e., 701614144 + 537173329 = 26488^2 + 23177^2 .

It is not a de Polignac number, because 1238787473 - 2⁴ = 1238787457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1238727473) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 10962665 + ... + 10962777.

It is an arithmetic number, because the mean of its divisors is an integer number (30296203).

Almost surely, 2^1238787473 is an apocalyptic number.

It is an amenable number.

1238787473 is a deficient number, since it is larger than the sum of its proper divisors (397207489).

1238787473 is a wasteful number, since it uses less digits than its factorization.

1238787473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 174 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 50.

The square root of 1238787473 is about 35196.4127859644. The cubic root of 1238787473 is about 1073.9867786403.

The spelling of 1238787473 in words is "one billion, two hundred thirty-eight million, seven hundred eighty-seven thousand, four hundred seventy-three".