91019342 has 16 divisors (see below), whose sum is σ = 142097760. Its totient is φ = 43672608.

The previous prime is 91019339. The next prime is 91019351. The reversal of 91019342 is 24391019.

It is a happy number.

It is a super-2 number, since 2×91019342² = 16569041236225928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4988 + ... + 14384.

It is an arithmetic number, because the mean of its divisors is an integer number (8881110).

Almost surely, 2^91019342 is an apocalyptic number.

91019342 is a deficient number, since it is larger than the sum of its proper divisors (51078418).

91019342 is a wasteful number, since it uses less digits than its factorization.

91019342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9595.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 91019342 is about 9540.4057565703. The cubic root of 91019342 is about 449.8260101027.

The spelling of 91019342 in words is "ninety-one million, nineteen thousand, three hundred forty-two".