469151381 has 4 divisors (see below), whose sum is σ = 469436172. Its totient is φ = 468866592.

The previous prime is 469151377. The next prime is 469151387. The reversal of 469151381 is 183151964.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 287845156 + 181306225 = 16966^2 + 13465^2 .

It is a cyclic number.

It is not a de Polignac number, because 469151381 - 2² = 469151377 is a prime.

It is a super-2 number, since 2×469151381² = 440206036588414322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (469151387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139910 + ... + 143223.

It is an arithmetic number, because the mean of its divisors is an integer number (117359043).

Almost surely, 2^469151381 is an apocalyptic number.

It is an amenable number.

469151381 is a deficient number, since it is larger than the sum of its proper divisors (284791).

469151381 is a wasteful number, since it uses less digits than its factorization.

469151381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284790.

The product of its digits is 25920, while the sum is 38.

The square root of 469151381 is about 21659.9026082760. The cubic root of 469151381 is about 777.0297848494.

The spelling of 469151381 in words is "four hundred sixty-nine million, one hundred fifty-one thousand, three hundred eighty-one".