91380037 has 16 divisors (see below), whose sum is σ = 105805440. Its totient is φ = 77306112.

The previous prime is 91380019. The next prime is 91380059. The reversal of 91380037 is 73008319.

It is a cyclic number.

It is not a de Polignac number, because 91380037 - 2¹⁹ = 90855749 is a prime.

It is a super-2 number, since 2×91380037² = 16700622324242738, 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 = 91379990 and 91380008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91380017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291793 + ... + 292105.

It is an arithmetic number, because the mean of its divisors is an integer number (6612840).

Almost surely, 2^91380037 is an apocalyptic number.

It is an amenable number.

91380037 is a deficient number, since it is larger than the sum of its proper divisors (14425403).

91380037 is a wasteful number, since it uses less digits than its factorization.

91380037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 91380037 is about 9559.2906117557. The cubic root of 91380037 is about 450.4194229467.

The spelling of 91380037 in words is "ninety-one million, three hundred eighty thousand, thirty-seven".