1451396638 has 8 divisors (see below), whose sum is σ = 2230194960. Its totient is φ = 707998320.

The previous prime is 1451396629. The next prime is 1451396659. The reversal of 1451396638 is 8366931541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8849898 + ... + 8850061.

It is an arithmetic number, because the mean of its divisors is an integer number (278774370).

Almost surely, 2^1451396638 is an apocalyptic number.

1451396638 is a deficient number, since it is larger than the sum of its proper divisors (778798322).

1451396638 is a wasteful number, since it uses less digits than its factorization.

1451396638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17700002.

The product of its digits is 466560, while the sum is 46.

The square root of 1451396638 is about 38097.1998708567. The cubic root of 1451396638 is about 1132.2144785204.

The spelling of 1451396638 in words is "one billion, four hundred fifty-one million, three hundred ninety-six thousand, six hundred thirty-eight".