7423897237 has 4 divisors (see below), whose sum is σ = 7457188480. Its totient is φ = 7390605996.

The previous prime is 7423897223. The next prime is 7423897309. The reversal of 7423897237 is 7327983247.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7327983247 = 13 ⋅563691019.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7423897237 is a prime.

It is a super-2 number, since 2×7423897237² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7423897207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16645287 + ... + 16645732.

It is an arithmetic number, because the mean of its divisors is an integer number (1864297120).

Almost surely, 2^7423897237 is an apocalyptic number.

It is an amenable number.

7423897237 is a deficient number, since it is larger than the sum of its proper divisors (33291243).

7423897237 is a wasteful number, since it uses less digits than its factorization.

7423897237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33291242.

The product of its digits is 3556224, while the sum is 52.

The square root of 7423897237 is about 86162.0405805248. The cubic root of 7423897237 is about 1950.7905833992.

The spelling of 7423897237 in words is "seven billion, four hundred twenty-three million, eight hundred ninety-seven thousand, two hundred thirty-seven".