249654351381 has 8 divisors (see below), whose sum is σ = 332876716224. Its totient is φ = 166434110400.

The previous prime is 249654351371. The next prime is 249654351389. The reversal of 249654351381 is 183153456942.

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

It is not a de Polignac number, because 249654351381 - 2¹⁴ = 249654334997 is a prime.

It is a super-2 number, since 2×249654351381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249654351389) 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, 232761 + ... + 743966.

It is an arithmetic number, because the mean of its divisors is an integer number (41609589528).

Almost surely, 2^249654351381 is an apocalyptic number.

It is an amenable number.

249654351381 is a deficient number, since it is larger than the sum of its proper divisors (83222364843).

249654351381 is an equidigital number, since it uses as much as digits as its factorization.

249654351381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061931.

The product of its digits is 3110400, while the sum is 51.

The spelling of 249654351381 in words is "two hundred forty-nine billion, six hundred fifty-four million, three hundred fifty-one thousand, three hundred eighty-one".