249388000451 has 2 divisors, whose sum is σ = 249388000452. Its totient is φ = 249388000450.

The previous prime is 249388000373. The next prime is 249388000481. The reversal of 249388000451 is 154000883942.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249388000451 is a prime.

It is not a weakly prime, because it can be changed into another prime (249388000481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124694000225 + 124694000226.

It is an arithmetic number, because the mean of its divisors is an integer number (124694000226).

Almost surely, 2^249388000451 is an apocalyptic number.

249388000451 is a deficient number, since it is larger than the sum of its proper divisors (1).

249388000451 is an equidigital number, since it uses as much as digits as its factorization.

249388000451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 249388000451 in words is "two hundred forty-nine billion, three hundred eighty-eight million, four hundred fifty-one", and thus it is an aban number.