36213493 has 2 divisors, whose sum is σ = 36213494. Its totient is φ = 36213492.

The previous prime is 36213473. The next prime is 36213497. The reversal of 36213493 is 39431263.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34963569 + 1249924 = 5913^2 + 1118^2 .

It is an emirp because it is prime and its reverse (39431263) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36213493 - 2¹⁷ = 36082421 is a prime.

It is a super-2 number, since 2×36213493² = 2622834150522098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36213497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18106746 + 18106747.

It is an arithmetic number, because the mean of its divisors is an integer number (18106747).

Almost surely, 2^36213493 is an apocalyptic number.

It is an amenable number.

36213493 is a deficient number, since it is larger than the sum of its proper divisors (1).

36213493 is an equidigital number, since it uses as much as digits as its factorization.

36213493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 31.

The square root of 36213493 is about 6017.7647843697. The cubic root of 36213493 is about 330.8441595322.

The spelling of 36213493 in words is "thirty-six million, two hundred thirteen thousand, four hundred ninety-three".