1665164154 has 32 divisors (see below), whose sum is σ = 3347922240. Its totient is φ = 552131712.

The previous prime is 1665164117. The next prime is 1665164159. The reversal of 1665164154 is 4514615661.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1665164159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1145292 + ... + 1146744.

It is an arithmetic number, because the mean of its divisors is an integer number (104622570).

Almost surely, 2^1665164154 is an apocalyptic number.

1665164154 is an abundant number, since it is smaller than the sum of its proper divisors (1682758086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1665164154 is a wasteful number, since it uses less digits than its factorization.

1665164154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334.

The product of its digits is 86400, while the sum is 39.

The square root of 1665164154 is about 40806.4229503151. The cubic root of 1665164154 is about 1185.2747092288.

The spelling of 1665164154 in words is "one billion, six hundred sixty-five million, one hundred sixty-four thousand, one hundred fifty-four".