9401661305 has 16 divisors (see below), whose sum is σ = 11412092160. Its totient is φ = 7435059072.

The previous prime is 9401661287. The next prime is 9401661329. The reversal of 9401661305 is 5031661049.

It is a cyclic number.

It is not a de Polignac number, because 9401661305 - 2¹⁶ = 9401595769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135002 + ... + 192428.

It is an arithmetic number, because the mean of its divisors is an integer number (713255760).

Almost surely, 2^9401661305 is an apocalyptic number.

It is an amenable number.

9401661305 is a deficient number, since it is larger than the sum of its proper divisors (2010430855).

9401661305 is a wasteful number, since it uses less digits than its factorization.

9401661305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57808.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 9401661305 is about 96962.1642961831. The cubic root of 9401661305 is about 2110.5786172470.

The spelling of 9401661305 in words is "nine billion, four hundred one million, six hundred sixty-one thousand, three hundred five".