1601015687 has 2 divisors, whose sum is σ = 1601015688. Its totient is φ = 1601015686.

The previous prime is 1601015629. The next prime is 1601015693. The reversal of 1601015687 is 7865101061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1601015687 - 2²⁰ = 1599967111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1601015627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800507843 + 800507844.

It is an arithmetic number, because the mean of its divisors is an integer number (800507844).

Almost surely, 2^1601015687 is an apocalyptic number.

1601015687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601015687 is an equidigital number, since it uses as much as digits as its factorization.

1601015687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 1601015687 is about 40012.6940732563. The cubic root of 1601015687 is about 1169.8545335013.

The spelling of 1601015687 in words is "one billion, six hundred one million, fifteen thousand, six hundred eighty-seven".