163751145 has 64 divisors (see below), whose sum is σ = 287981568. Its totient is φ = 79200000.

The previous prime is 163751143. The next prime is 163751153. The reversal of 163751145 is 541157361.

It is not a de Polignac number, because 163751145 - 2¹ = 163751143 is a prime.

It is a super-2 number, since 2×163751145² = 53628874977622050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (163751143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 652270 + ... + 652520.

It is an arithmetic number, because the mean of its divisors is an integer number (4499712).

Almost surely, 2^163751145 is an apocalyptic number.

163751145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163751145 is a deficient number, since it is larger than the sum of its proper divisors (124230423).

163751145 is a wasteful number, since it uses less digits than its factorization.

163751145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374.

The product of its digits is 12600, while the sum is 33.

The square root of 163751145 is about 12796.5286308436. The cubic root of 163751145 is about 547.0933658349.

The spelling of 163751145 in words is "one hundred sixty-three million, seven hundred fifty-one thousand, one hundred forty-five".