163400612 has 6 divisors (see below), whose sum is σ = 285951078. Its totient is φ = 81700304.

The previous prime is 163400609. The next prime is 163400669. The reversal of 163400612 is 216004361.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 108284836 + 55115776 = 10406^2 + 7424^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20425073 + ... + 20425080.

It is an arithmetic number, because the mean of its divisors is an integer number (47658513).

Almost surely, 2^163400612 is an apocalyptic number.

It is an amenable number.

163400612 is a deficient number, since it is larger than the sum of its proper divisors (122550466).

163400612 is a wasteful number, since it uses less digits than its factorization.

163400612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40850157 (or 40850155 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 163400612 is about 12782.8248834129. The cubic root of 163400612 is about 546.7027094684.

Adding to 163400612 its reverse (216004361), we get a palindrome (379404973).

The spelling of 163400612 in words is "one hundred sixty-three million, four hundred thousand, six hundred twelve".