238781545490 has 16 divisors (see below), whose sum is σ = 429817563648. Its totient is φ = 95510222256.

The previous prime is 238781545463. The next prime is 238781545507. The reversal of 238781545490 is 94545187832.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151409 + ... + 707451.

It is an arithmetic number, because the mean of its divisors is an integer number (26863597728).

Almost surely, 2^238781545490 is an apocalyptic number.

238781545490 is a deficient number, since it is larger than the sum of its proper divisors (191036018158).

238781545490 is a wasteful number, since it uses less digits than its factorization.

238781545490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598993.

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 238781545490 in words is "two hundred thirty-eight billion, seven hundred eighty-one million, five hundred forty-five thousand, four hundred ninety".