816151454 has 4 divisors (see below), whose sum is σ = 1224227184. Its totient is φ = 408075726.

The previous prime is 816151451. The next prime is 816151463. The reversal of 816151454 is 454151618.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 454151618 = 2 ⋅227075809.

It is a super-2 number, since 2×816151454² = 1332206391732628232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816151451) 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, 204037862 + ... + 204037865.

It is an arithmetic number, because the mean of its divisors is an integer number (306056796).

Almost surely, 2^816151454 is an apocalyptic number.

816151454 is a deficient number, since it is larger than the sum of its proper divisors (408075730).

816151454 is a wasteful number, since it uses less digits than its factorization.

816151454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408075729.

The product of its digits is 19200, while the sum is 35.

The square root of 816151454 is about 28568.3645664221. The cubic root of 816151454 is about 934.5235560550.

The spelling of 816151454 in words is "eight hundred sixteen million, one hundred fifty-one thousand, four hundred fifty-four".