81483902 has 4 divisors (see below), whose sum is σ = 122225856. Its totient is φ = 40741950.

The previous prime is 81483893. The next prime is 81483911. The reversal of 81483902 is 20938418.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (81483893) and next prime (81483911).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20370974 + ... + 20370977.

It is an arithmetic number, because the mean of its divisors is an integer number (30556464).

Almost surely, 2^81483902 is an apocalyptic number.

81483902 is a deficient number, since it is larger than the sum of its proper divisors (40741954).

81483902 is a wasteful number, since it uses less digits than its factorization.

81483902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40741953.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 81483902 is about 9026.8434128437. The cubic root of 81483902 is about 433.5347751127.

The spelling of 81483902 in words is "eighty-one million, four hundred eighty-three thousand, nine hundred two".