1238507557379 has 16 divisors (see below), whose sum is σ = 1288077837120. Its totient is φ = 1189396992000.

The previous prime is 1238507557369. The next prime is 1238507557381. The reversal of 1238507557379 is 9737557058321.

It is a cyclic number.

It is not a de Polignac number, because 1238507557379 - 2²⁰ = 1238506508803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1238507557369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39168794 + ... + 39200400.

It is an arithmetic number, because the mean of its divisors is an integer number (80504864820).

Almost surely, 2^{1238507557379} is an apocalyptic number.

1238507557379 is a deficient number, since it is larger than the sum of its proper divisors (49570279741).

1238507557379 is a wasteful number, since it uses less digits than its factorization.

1238507557379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38830.

The product of its (nonzero) digits is 55566000, while the sum is 62.

The spelling of 1238507557379 in words is "one trillion, two hundred thirty-eight billion, five hundred seven million, five hundred fifty-seven thousand, three hundred seventy-nine".