73743157 has 2 divisors, whose sum is σ = 73743158. Its totient is φ = 73743156.

The previous prime is 73743149. The next prime is 73743179. The reversal of 73743157 is 75134737.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70408881 + 3334276 = 8391^2 + 1826^2 .

It is a cyclic number.

It is not a de Polignac number, because 73743157 - 2³ = 73743149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73743107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36871578 + 36871579.

It is an arithmetic number, because the mean of its divisors is an integer number (36871579).

Almost surely, 2^73743157 is an apocalyptic number.

It is an amenable number.

73743157 is a deficient number, since it is larger than the sum of its proper divisors (1).

73743157 is an equidigital number, since it uses as much as digits as its factorization.

73743157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61740, while the sum is 37.

The square root of 73743157 is about 8587.3835945531. The cubic root of 73743157 is about 419.3473556078.

The spelling of 73743157 in words is "seventy-three million, seven hundred forty-three thousand, one hundred fifty-seven".