73878437 has 2 divisors, whose sum is σ = 73878438. Its totient is φ = 73878436.

The previous prime is 73878397. The next prime is 73878451. The reversal of 73878437 is 73487837.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48011041 + 25867396 = 6929^2 + 5086^2 .

It is a cyclic number.

It is not a de Polignac number, because 73878437 - 2¹⁶ = 73812901 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 73878391 and 73878400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73878037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36939218 + 36939219.

It is an arithmetic number, because the mean of its divisors is an integer number (36939219).

Almost surely, 2^73878437 is an apocalyptic number.

It is an amenable number.

73878437 is a deficient number, since it is larger than the sum of its proper divisors (1).

73878437 is an equidigital number, since it uses as much as digits as its factorization.

73878437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 790272, while the sum is 47.

The square root of 73878437 is about 8595.2566570173. The cubic root of 73878437 is about 419.6036264194.

The spelling of 73878437 in words is "seventy-three million, eight hundred seventy-eight thousand, four hundred thirty-seven".