1601115619 has 8 divisors (see below), whose sum is σ = 1605895200. Its totient is φ = 1596344256.

The previous prime is 1601115613. The next prime is 1601115623. The reversal of 1601115619 is 9165111061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1601115619 - 2³ = 1601115611 is a prime.

It is a super-2 number, since 2×1601115619² = 5127142450811506322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1601115611) 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, 667887 + ... + 670279.

It is an arithmetic number, because the mean of its divisors is an integer number (200736900).

Almost surely, 2^1601115619 is an apocalyptic number.

1601115619 is a deficient number, since it is larger than the sum of its proper divisors (4779581).

1601115619 is a wasteful number, since it uses less digits than its factorization.

1601115619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4109.

The product of its (nonzero) digits is 1620, while the sum is 31.

The square root of 1601115619 is about 40013.9428074765. The cubic root of 1601115619 is about 1169.8788729403.

The spelling of 1601115619 in words is "one billion, six hundred one million, one hundred fifteen thousand, six hundred nineteen".