1601842087 has 4 divisors (see below), whose sum is σ = 1604381296. Its totient is φ = 1599302880.

The previous prime is 1601842069. The next prime is 1601842093. The reversal of 1601842087 is 7802481061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7802481061 = 23 ⋅339238307.

It is a cyclic number.

It is not a de Polignac number, because 1601842087 - 2¹¹ = 1601840039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601842027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1268658 + ... + 1269919.

It is an arithmetic number, because the mean of its divisors is an integer number (401095324).

Almost surely, 2^1601842087 is an apocalyptic number.

1601842087 is a deficient number, since it is larger than the sum of its proper divisors (2539209).

1601842087 is an equidigital number, since it uses as much as digits as its factorization.

1601842087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539208.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 1601842087 is about 40023.0194638036. The cubic root of 1601842087 is about 1170.0557810598.

The spelling of 1601842087 in words is "one billion, six hundred one million, eight hundred forty-two thousand, eighty-seven".