238783977749 has 8 divisors (see below), whose sum is σ = 238955935680. Its totient is φ = 238612069696.

The previous prime is 238783977713. The next prime is 238783977769. The reversal of 238783977749 is 947779387832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 238783977749 - 2⁸ = 238783977493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238783977709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17611757 + ... + 17625309.

It is an arithmetic number, because the mean of its divisors is an integer number (29869491960).

Almost surely, 2^238783977749 is an apocalyptic number.

It is an amenable number.

238783977749 is a deficient number, since it is larger than the sum of its proper divisors (171957931).

238783977749 is a wasteful number, since it uses less digits than its factorization.

238783977749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24939.

The product of its digits is 896168448, while the sum is 74.

The spelling of 238783977749 in words is "two hundred thirty-eight billion, seven hundred eighty-three million, nine hundred seventy-seven thousand, seven hundred forty-nine".