1664150401 has 16 divisors (see below), whose sum is σ = 1752076800. Its totient is φ = 1578528000.

The previous prime is 1664150377. The next prime is 1664150407. The reversal of 1664150401 is 1040514661.

It is a cyclic number.

It is not a de Polignac number, because 1664150401 - 2¹³ = 1664142209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1664150401.

It is not an unprimeable number, because it can be changed into a prime (1664150407) 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, 732295 + ... + 734563.

It is an arithmetic number, because the mean of its divisors is an integer number (109504800).

Almost surely, 2^1664150401 is an apocalyptic number.

It is an amenable number.

1664150401 is a deficient number, since it is larger than the sum of its proper divisors (87926399).

1664150401 is a wasteful number, since it uses less digits than its factorization.

1664150401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2760.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1664150401 is about 40793.9995710153. Note that the first 3 decimals coincide. The cubic root of 1664150401 is about 1185.0341284004.

The spelling of 1664150401 in words is "one billion, six hundred sixty-four million, one hundred fifty thousand, four hundred one".