1601440324 has 81 divisors (see below), whose sum is σ = 3303187069. Its totient is φ = 678705280.

The previous prime is 1601440319. The next prime is 1601440331. The reversal of 1601440324 is 4230441061.

The square root of 1601440324 is 40018.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1246796100 + 354644224 = 35310^2 + 18832^2 .

It is a super-2 number, since 2×1601440324² = 5129222222666449952, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 14966679 + ... + 14966785.

Almost surely, 2^1601440324 is an apocalyptic number.

1601440324 is the 40018-th square number.

It is an amenable number.

1601440324 is an abundant number, since it is smaller than the sum of its proper divisors (1701746745).

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

1601440324 is a wasteful number, since it uses less digits than its factorization.

1601440324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The cubic root of 1601440324 is about 1169.9579511028.

Multiplying 1601440324 by its sum of digits (25), we get a square (40036008100 = 200090²).

Multiplying 1601440324 by its product of nonzero digits (2304), we get a square (3689718506496 = 1920864²).

Adding to 1601440324 its reverse (4230441061), we get a palindrome (5831881385).

The spelling of 1601440324 in words is "one billion, six hundred one million, four hundred forty thousand, three hundred twenty-four".