168463634 has 4 divisors (see below), whose sum is σ = 252695454. Its totient is φ = 84231816.

The previous prime is 168463609. The next prime is 168463663. The reversal of 168463634 is 436364861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436364861 = 7213 ⋅60497.

It can be written as a sum of positive squares in only one way, i.e., 131217025 + 37246609 = 11455^2 + 6103^2 .

It is a junction number, because it is equal to n+sod(n) for n = 168463591 and 168463600.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42115907 + ... + 42115910.

Almost surely, 2^168463634 is an apocalyptic number.

168463634 is a deficient number, since it is larger than the sum of its proper divisors (84231820).

168463634 is an equidigital number, since it uses as much as digits as its factorization.

168463634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84231819.

The product of its digits is 248832, while the sum is 41.

The square root of 168463634 is about 12979.3541441784. The cubic root of 168463634 is about 552.2919607399.

The spelling of 168463634 in words is "one hundred sixty-eight million, four hundred sixty-three thousand, six hundred thirty-four".