61812383 has 2 divisors, whose sum is σ = 61812384. Its totient is φ = 61812382.

The previous prime is 61812347. The next prime is 61812397. The reversal of 61812383 is 38321816.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61812383 - 2⁶ = 61812319 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61812343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30906191 + 30906192.

It is an arithmetic number, because the mean of its divisors is an integer number (30906192).

Almost surely, 2^61812383 is an apocalyptic number.

61812383 is a deficient number, since it is larger than the sum of its proper divisors (1).

61812383 is an equidigital number, since it uses as much as digits as its factorization.

61812383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 32.

The square root of 61812383 is about 7862.0851559876. The cubic root of 61812383 is about 395.3895276158.

The spelling of 61812383 in words is "sixty-one million, eight hundred twelve thousand, three hundred eighty-three".