162451402 has 4 divisors (see below), whose sum is σ = 243677106. Its totient is φ = 81225700.

The previous prime is 162451391. The next prime is 162451409. The reversal of 162451402 is 204154261.

It is a happy number.

162451402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204154261 = 5623 ⋅36307.

It can be written as a sum of positive squares in only one way, i.e., 128799801 + 33651601 = 11349^2 + 5801^2 .

It is not an unprimeable number, because it can be changed into a prime (162451409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40612849 + ... + 40612852.

Almost surely, 2^162451402 is an apocalyptic number.

162451402 is a deficient number, since it is larger than the sum of its proper divisors (81225704).

162451402 is an equidigital number, since it uses as much as digits as its factorization.

162451402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81225703.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 162451402 is about 12745.6424710565. The cubic root of 162451402 is about 545.6420366079.

The spelling of 162451402 in words is "one hundred sixty-two million, four hundred fifty-one thousand, four hundred two".