1374453638 has 8 divisors (see below), whose sum is σ = 2182955832. Its totient is φ = 646801696.

The previous prime is 1374453631. The next prime is 1374453659. The reversal of 1374453638 is 8363544731.

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

It is a super-2 number, since 2×1374453638² = 3778245606022870088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1374453631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20212520 + ... + 20212587.

It is an arithmetic number, because the mean of its divisors is an integer number (272869479).

Almost surely, 2^1374453638 is an apocalyptic number.

1374453638 is a deficient number, since it is larger than the sum of its proper divisors (808502194).

1374453638 is a wasteful number, since it uses less digits than its factorization.

1374453638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40425126.

The product of its digits is 725760, while the sum is 44.

The square root of 1374453638 is about 37073.6245597864. The cubic root of 1374453638 is about 1111.8427411408.

The spelling of 1374453638 in words is "one billion, three hundred seventy-four million, four hundred fifty-three thousand, six hundred thirty-eight".