387136522 has 4 divisors (see below), whose sum is σ = 580704786. Its totient is φ = 193568260.

The previous prime is 387136511. The next prime is 387136523. The reversal of 387136522 is 225631783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 318229921 + 68906601 = 17839^2 + 8301^2 .

It is not an unprimeable number, because it can be changed into a prime (387136523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96784129 + ... + 96784132.

Almost surely, 2^387136522 is an apocalyptic number.

387136522 is a deficient number, since it is larger than the sum of its proper divisors (193568264).

387136522 is a wasteful number, since it uses less digits than its factorization.

387136522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193568263.

The product of its digits is 60480, while the sum is 37.

The square root of 387136522 is about 19675.7851685771. The cubic root of 387136522 is about 728.8218451293.

The spelling of 387136522 in words is "three hundred eighty-seven million, one hundred thirty-six thousand, five hundred twenty-two".