164661542 has 16 divisors (see below), whose sum is σ = 250940592. Its totient is φ = 81022560.

The previous prime is 164661527. The next prime is 164661547. The reversal of 164661542 is 245166461.

It is a super-2 number, since 2×164661542² = 54226846827635528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164661547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44192 + ... + 47772.

It is an arithmetic number, because the mean of its divisors is an integer number (15683787).

Almost surely, 2^164661542 is an apocalyptic number.

164661542 is a deficient number, since it is larger than the sum of its proper divisors (86279050).

164661542 is a wasteful number, since it uses less digits than its factorization.

164661542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3943.

The product of its digits is 34560, while the sum is 35.

The square root of 164661542 is about 12832.0513558823. The cubic root of 164661542 is about 548.1053729385.

The spelling of 164661542 in words is "one hundred sixty-four million, six hundred sixty-one thousand, five hundred forty-two".