74238195487 has 2 divisors, whose sum is σ = 74238195488. Its totient is φ = 74238195486.

The previous prime is 74238195463. The next prime is 74238195503. The reversal of 74238195487 is 78459183247.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74238195487 is a prime.

It is a super-2 number, since 2×74238195487² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74238195587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37119097743 + 37119097744.

It is an arithmetic number, because the mean of its divisors is an integer number (37119097744).

Almost surely, 2^74238195487 is an apocalyptic number.

74238195487 is a deficient number, since it is larger than the sum of its proper divisors (1).

74238195487 is an equidigital number, since it uses as much as digits as its factorization.

74238195487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13547520, while the sum is 58.

The spelling of 74238195487 in words is "seventy-four billion, two hundred thirty-eight million, one hundred ninety-five thousand, four hundred eighty-seven".