402161603 has 2 divisors, whose sum is σ = 402161604. Its totient is φ = 402161602.

The previous prime is 402161527. The next prime is 402161609. The reversal of 402161603 is 306161204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402161603 is a prime.

It is not a weakly prime, because it can be changed into another prime (402161609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201080801 + 201080802.

It is an arithmetic number, because the mean of its divisors is an integer number (201080802).

Almost surely, 2^402161603 is an apocalyptic number.

402161603 is a deficient number, since it is larger than the sum of its proper divisors (1).

402161603 is an equidigital number, since it uses as much as digits as its factorization.

402161603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 402161603 is about 20053.9672633621. The cubic root of 402161603 is about 738.1311516729.

The spelling of 402161603 in words is "four hundred two million, one hundred sixty-one thousand, six hundred three".