82151019 has 6 divisors (see below), whose sum is σ = 118662596. Its totient is φ = 54767340.

The previous prime is 82150979. The next prime is 82151033. The reversal of 82151019 is 91015128.

It is not a de Polignac number, because 82151019 - 2⁹ = 82150507 is a prime.

It is a super-2 number, since 2×82151019² = 13497579845476722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82150983 and 82151001.

It is not an unprimeable number, because it can be changed into a prime (82151059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4563937 + ... + 4563954.

Almost surely, 2^82151019 is an apocalyptic number.

82151019 is a deficient number, since it is larger than the sum of its proper divisors (36511577).

82151019 is a wasteful number, since it uses less digits than its factorization.

82151019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9127897 (or 9127894 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 82151019 is about 9063.7199316837. The cubic root of 82151019 is about 434.7146920252.

The spelling of 82151019 in words is "eighty-two million, one hundred fifty-one thousand, nineteen".