902052181 has 8 divisors (see below), whose sum is σ = 956683224. Its totient is φ = 847595520.

The previous prime is 902052169. The next prime is 902052187. The reversal of 902052181 is 181250209.

902052181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2592100 + 899460081 = 1610^2 + 29991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 902052181 - 2¹⁵ = 902019413 is a prime.

It is a super-2 number, since 2×902052181² = 1627396274493713522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (902052187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32860 + ... + 53701.

It is an arithmetic number, because the mean of its divisors is an integer number (119585403).

Almost surely, 2^902052181 is an apocalyptic number.

It is an amenable number.

902052181 is a deficient number, since it is larger than the sum of its proper divisors (54631043).

902052181 is a wasteful number, since it uses less digits than its factorization.

902052181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87191.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 902052181 is about 30034.1835414249. The cubic root of 902052181 is about 966.2226642019. Note that the first 3 decimals are identical.

The spelling of 902052181 in words is "nine hundred two million, fifty-two thousand, one hundred eighty-one".