1251348481 has 8 divisors (see below), whose sum is σ = 1270849824. Its totient is φ = 1231871520.

The previous prime is 1251348467. The next prime is 1251348487. The reversal of 1251348481 is 1848431521.

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 1251348481 - 2⁷ = 1251348353 is a prime.

It is a super-2 number, since 2×1251348481² = 3131746041802014722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1251348481.

It is not an unprimeable number, because it can be changed into a prime (1251348487) 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, 116181 + ... + 126493.

It is an arithmetic number, because the mean of its divisors is an integer number (158856228).

Almost surely, 2^1251348481 is an apocalyptic number.

It is an amenable number.

1251348481 is a deficient number, since it is larger than the sum of its proper divisors (19501343).

1251348481 is a wasteful number, since it uses less digits than its factorization.

1251348481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12191.

The product of its digits is 30720, while the sum is 37.

The square root of 1251348481 is about 35374.4043200730. The cubic root of 1251348481 is about 1077.6045677054.

The spelling of 1251348481 in words is "one billion, two hundred fifty-one million, three hundred forty-eight thousand, four hundred eighty-one".