164425811 has 6 divisors (see below), whose sum is σ = 180732636. Its totient is φ = 149477900.

The previous prime is 164425777. The next prime is 164425813. The reversal of 164425811 is 118524461.

164425811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164425811 - 2⁶ = 164425747 is a prime.

It is a super-3 number, since 3×164425811³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164425813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 679325 + ... + 679566.

It is an arithmetic number, because the mean of its divisors is an integer number (30122106).

Almost surely, 2^164425811 is an apocalyptic number.

164425811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

164425811 is a deficient number, since it is larger than the sum of its proper divisors (16306825).

164425811 is a wasteful number, since it uses less digits than its factorization.

164425811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358913 (or 1358902 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 164425811 is about 12822.8628238783. The cubic root of 164425811 is about 547.8436904342.

The spelling of 164425811 in words is "one hundred sixty-four million, four hundred twenty-five thousand, eight hundred eleven".