948156661 has 4 divisors (see below), whose sum is σ = 953121024. Its totient is φ = 943192300.

The previous prime is 948156659. The next prime is 948156673. The reversal of 948156661 is 166651849.

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.

It is a cyclic number.

It is not a de Polignac number, because 948156661 - 2¹ = 948156659 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 (948156641) 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, 2481895 + ... + 2482276.

It is an arithmetic number, because the mean of its divisors is an integer number (238280256).

Almost surely, 2^948156661 is an apocalyptic number.

It is an amenable number.

948156661 is a deficient number, since it is larger than the sum of its proper divisors (4964363).

948156661 is a wasteful number, since it uses less digits than its factorization.

948156661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4964362.

The product of its digits is 311040, while the sum is 46.

The square root of 948156661 is about 30792.1525879566. The cubic root of 948156661 is about 982.4113397800.

It can be divided in two parts, 948 and 156661, that added together give a square (157609 = 397²).

The spelling of 948156661 in words is "nine hundred forty-eight million, one hundred fifty-six thousand, six hundred sixty-one".