146637538 has 16 divisors (see below), whose sum is σ = 227914560. Its totient is φ = 70713136.

The previous prime is 146637521. The next prime is 146637551. The reversal of 146637538 is 835736641.

It is a junction number, because it is equal to n+sod(n) for n = 146637494 and 146637503.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 5470 + ... + 17977.

It is an arithmetic number, because the mean of its divisors is an integer number (14244660).

Almost surely, 2^146637538 is an apocalyptic number.

146637538 is a deficient number, since it is larger than the sum of its proper divisors (81277022).

146637538 is a wasteful number, since it uses less digits than its factorization.

146637538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23561.

The product of its digits is 362880, while the sum is 43.

The square root of 146637538 is about 12109.3987464283. The cubic root of 146637538 is about 527.3290782908.

It can be divided in two parts, 14663 and 7538, that added together give a square (22201 = 149²).

The spelling of 146637538 in words is "one hundred forty-six million, six hundred thirty-seven thousand, five hundred thirty-eight".