451912149 has 16 divisors (see below), whose sum is σ = 721000000. Its totient is φ = 278099568.

The previous prime is 451912099. The next prime is 451912159. The reversal of 451912149 is 941219154.

It is a happy number.

It is not a de Polignac number, because 451912149 - 2²⁰ = 450863573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451912159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 643399 + ... + 644100.

It is an arithmetic number, because the mean of its divisors is an integer number (45062500).

Almost surely, 2^451912149 is an apocalyptic number.

It is an amenable number.

451912149 is a deficient number, since it is larger than the sum of its proper divisors (269087851).

451912149 is a wasteful number, since it uses less digits than its factorization.

451912149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287521 (or 1287515 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 451912149 is about 21258.2254433431. The cubic root of 451912149 is about 767.3933044253.

The spelling of 451912149 in words is "four hundred fifty-one million, nine hundred twelve thousand, one hundred forty-nine".