1451893138 has 4 divisors (see below), whose sum is σ = 2177839710. Its totient is φ = 725946568.

The previous prime is 1451893123. The next prime is 1451893141. The reversal of 1451893138 is 8313981541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1406775049 + 45118089 = 37507^2 + 6717^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1451893094 and 1451893103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362973283 + ... + 362973286.

Almost surely, 2^1451893138 is an apocalyptic number.

1451893138 is a deficient number, since it is larger than the sum of its proper divisors (725946572).

1451893138 is an equidigital number, since it uses as much as digits as its factorization.

1451893138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725946571.

The product of its digits is 103680, while the sum is 43.

The square root of 1451893138 is about 38103.7155406136. The cubic root of 1451893138 is about 1132.3435680667.

The spelling of 1451893138 in words is "one billion, four hundred fifty-one million, eight hundred ninety-three thousand, one hundred thirty-eight".