2451451493 has 8 divisors (see below), whose sum is σ = 2618626968. Its totient is φ = 2286828544.

The previous prime is 2451451487. The next prime is 2451451507. The reversal of 2451451493 is 3941541542.

It can be written as a sum of positive squares in 4 ways, for example, as 1399489 + 2450052004 = 1183^2 + 49498^2 .

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 2451451493 - 2²⁰ = 2450402917 is a prime.

It is a super-2 number, since 2×2451451493² = 12019228845063858098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2451451433) 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, 636146 + ... + 639987.

It is an arithmetic number, because the mean of its divisors is an integer number (327328371).

Almost surely, 2^2451451493 is an apocalyptic number.

It is an amenable number.

2451451493 is a deficient number, since it is larger than the sum of its proper divisors (167175475).

2451451493 is a wasteful number, since it uses less digits than its factorization.

2451451493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276263.

The product of its digits is 86400, while the sum is 38.

The square root of 2451451493 is about 49512.1348055202. The cubic root of 2451451493 is about 1348.3659228203.

The spelling of 2451451493 in words is "two billion, four hundred fifty-one million, four hundred fifty-one thousand, four hundred ninety-three".