1451172630 has 32 divisors (see below), whose sum is σ = 3484303200. Its totient is φ = 386813952.

The previous prime is 1451172629. The next prime is 1451172647. The reversal of 1451172630 is 362711541.

It is a super-2 number, since 2×1451172630² = 4211804004122233800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71676 + ... + 89664.

It is an arithmetic number, because the mean of its divisors is an integer number (108884475).

Almost surely, 2^1451172630 is an apocalyptic number.

1451172630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1451172630 is an abundant number, since it is smaller than the sum of its proper divisors (2033130570).

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

1451172630 is a wasteful number, since it uses less digits than its factorization.

1451172630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20688.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1451172630 is about 38094.2598038077. The cubic root of 1451172630 is about 1132.1562270075.

The spelling of 1451172630 in words is "one billion, four hundred fifty-one million, one hundred seventy-two thousand, six hundred thirty".