1601637376 has 88 divisors (see below), whose sum is σ = 3395727360. Its totient is φ = 752947200.

The previous prime is 1601637341. The next prime is 1601637379. The reversal of 1601637376 is 6737361061.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1601637379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3715881 + ... + 3716311.

Almost surely, 2^1601637376 is an apocalyptic number.

1601637376 is a gapful number since it is divisible by the number (16) 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 1601637376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1697863680).

1601637376 is an abundant number, since it is smaller than the sum of its proper divisors (1794089984).

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

1601637376 is a wasteful number, since it uses less digits than its factorization.

1601637376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 1601637376 is about 40020.4619663492. The cubic root of 1601637376 is about 1170.0059356360.

The spelling of 1601637376 in words is "one billion, six hundred one million, six hundred thirty-seven thousand, three hundred seventy-six".