1531672064 has 80 divisors (see below), whose sum is σ = 3310100640. Its totient is φ = 703856640.

The previous prime is 1531672027. The next prime is 1531672133. The reversal of 1531672064 is 4602761351.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2389184 + ... + 2389824.

It is an arithmetic number, because the mean of its divisors is an integer number (41376258).

Almost surely, 2^1531672064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1531672064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1655050320).

1531672064 is an abundant number, since it is smaller than the sum of its proper divisors (1778428576).

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

1531672064 is an equidigital number, since it uses as much as digits as its factorization.

1531672064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1015 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 1531672064 is about 39136.5821706495. The cubic root of 1531672064 is about 1152.7149625616.

The spelling of 1531672064 in words is "one billion, five hundred thirty-one million, six hundred seventy-two thousand, sixty-four".