163513274 has 4 divisors (see below), whose sum is σ = 245269914. Its totient is φ = 81756636.

The previous prime is 163513271. The next prime is 163513277. The reversal of 163513274 is 472315361.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (163513271) and next prime (163513277).

It can be written as a sum of positive squares in only one way, i.e., 151905625 + 11607649 = 12325^2 + 3407^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 163513274.

It is not an unprimeable number, because it can be changed into a prime (163513271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40878317 + ... + 40878320.

Almost surely, 2^163513274 is an apocalyptic number.

163513274 is a deficient number, since it is larger than the sum of its proper divisors (81756640).

163513274 is an equidigital number, since it uses as much as digits as its factorization.

163513274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81756639.

The product of its digits is 15120, while the sum is 32.

The square root of 163513274 is about 12787.2308964842. The cubic root of 163513274 is about 546.8283280725.

The spelling of 163513274 in words is "one hundred sixty-three million, five hundred thirteen thousand, two hundred seventy-four".