1238100493 has 12 divisors (see below), whose sum is σ = 1475369532. Its totient is φ = 1035343680.

The previous prime is 1238100481. The next prime is 1238100499. The reversal of 1238100493 is 3940018321.

It can be written as a sum of positive squares in 2 ways, for example, as 162129289 + 1075971204 = 12733^2 + 32802^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1238100493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238100499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 306130 + ... + 310147.

It is an arithmetic number, because the mean of its divisors is an integer number (122947461).

Almost surely, 2^1238100493 is an apocalyptic number.

It is an amenable number.

1238100493 is a deficient number, since it is larger than the sum of its proper divisors (237269039).

1238100493 is an equidigital number, since it uses as much as digits as its factorization.

1238100493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616332 (or 616325 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1238100493 is about 35186.6521993781. The cubic root of 1238100493 is about 1073.7882124668.

The spelling of 1238100493 in words is "one billion, two hundred thirty-eight million, one hundred thousand, four hundred ninety-three".