1601512141 has 4 divisors (see below), whose sum is σ = 1620807552. Its totient is φ = 1582216732.

The previous prime is 1601512093. The next prime is 1601512151. The reversal of 1601512141 is 1412151061.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1412151061 = 1721 ⋅820541.

It is a cyclic number.

It is not a de Polignac number, because 1601512141 - 2¹³ = 1601503949 is a prime.

It is a super-2 number, since 2×1601512141² = 5129682275540807762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601512151) 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, 9647581 + ... + 9647746.

It is an arithmetic number, because the mean of its divisors is an integer number (405201888).

Almost surely, 2^1601512141 is an apocalyptic number.

It is an amenable number.

1601512141 is a deficient number, since it is larger than the sum of its proper divisors (19295411).

1601512141 is an equidigital number, since it uses as much as digits as its factorization.

1601512141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19295410.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 1601512141 is about 40018.8972986513. The cubic root of 1601512141 is about 1169.9754398624.

The spelling of 1601512141 in words is "one billion, six hundred one million, five hundred twelve thousand, one hundred forty-one".