1664627151 has 16 divisors (see below), whose sum is σ = 2486717568. Its totient is φ = 981597600.

The previous prime is 1664627149. The next prime is 1664627177. The reversal of 1664627151 is 1517264661.

It is not a de Polignac number, because 1664627151 - 2¹ = 1664627149 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664627351) 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, 680445 + ... + 682886.

It is an arithmetic number, because the mean of its divisors is an integer number (155419848).

Almost surely, 2^1664627151 is an apocalyptic number.

1664627151 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1664627151 is a deficient number, since it is larger than the sum of its proper divisors (822090417).

1664627151 is a wasteful number, since it uses less digits than its factorization.

1664627151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363382.

The product of its digits is 60480, while the sum is 39.

The square root of 1664627151 is about 40799.8425364608. The cubic root of 1664627151 is about 1185.1472814500.

The spelling of 1664627151 in words is "one billion, six hundred sixty-four million, six hundred twenty-seven thousand, one hundred fifty-one".