1251601464 has 16 divisors (see below), whose sum is σ = 3129003720. Its totient is φ = 417200480.

The previous prime is 1251601457. The next prime is 1251601469. The reversal of 1251601464 is 4641061521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251601469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26075007 + ... + 26075054.

Almost surely, 2^1251601464 is an apocalyptic number.

It is an amenable number.

1251601464 is an abundant number, since it is smaller than the sum of its proper divisors (1877402256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1251601464 is a wasteful number, since it uses less digits than its factorization.

1251601464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52150070 (or 52150066 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1251601464 is about 35377.9799310249. The cubic root of 1251601464 is about 1077.6771819747.

Adding to 1251601464 its reverse (4641061521), we get a palindrome (5892662985).

The spelling of 1251601464 in words is "one billion, two hundred fifty-one million, six hundred one thousand, four hundred sixty-four".