1451938992 has 120 divisors (see below), whose sum is σ = 4620012336. Its totient is φ = 390426624.

The previous prime is 1451938991. The next prime is 1451939011. The reversal of 1451938992 is 2998391541.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (1451938991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21828 + ... + 58140.

Almost surely, 2^1451938992 is an apocalyptic number.

1451938992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1451938992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2310006168).

1451938992 is an abundant number, since it is smaller than the sum of its proper divisors (3168073344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1451938992 is a wasteful number, since it uses less digits than its factorization.

1451938992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36355 (or 36342 counting only the distinct ones).

The product of its digits is 699840, while the sum is 51.

The square root of 1451938992 is about 38104.3172357149. The cubic root of 1451938992 is about 1132.3554885802.

The spelling of 1451938992 in words is "one billion, four hundred fifty-one million, nine hundred thirty-eight thousand, nine hundred ninety-two".