162638745 has 32 divisors (see below), whose sum is σ = 276670080. Its totient is φ = 81300480.

The previous prime is 162638743. The next prime is 162638747. The reversal of 162638745 is 547836261.

It is an interprime number because it is at equal distance from previous prime (162638743) and next prime (162638747).

It is not a de Polignac number, because 162638745 - 2¹ = 162638743 is a prime.

It is a super-2 number, since 2×162638745² = 52902722750350050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 162638697 and 162638706.

It is not an unprimeable number, because it can be changed into a prime (162638743) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67410 + ... + 69780.

It is an arithmetic number, because the mean of its divisors is an integer number (8645940).

Almost surely, 2^162638745 is an apocalyptic number.

162638745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

162638745 is a deficient number, since it is larger than the sum of its proper divisors (114031335).

162638745 is a wasteful number, since it uses less digits than its factorization.

162638745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665.

The product of its digits is 241920, while the sum is 42.

The square root of 162638745 is about 12752.9896494900. The cubic root of 162638745 is about 545.8517053558.

The spelling of 162638745 in words is "one hundred sixty-two million, six hundred thirty-eight thousand, seven hundred forty-five".