74490920619 has 8 divisors (see below), whose sum is σ = 99930560832. Its totient is φ = 49355947080.

The previous prime is 74490920597. The next prime is 74490920641. The reversal of 74490920619 is 91602909447.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (74490920597) and next prime (74490920641).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74490920619 - 2⁵ = 74490920587 is a prime.

It is a super-2 number, since 2×74490920619² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74490920659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76166097 + ... + 76167074.

It is an arithmetic number, because the mean of its divisors is an integer number (12491320104).

Almost surely, 2^74490920619 is an apocalyptic number.

74490920619 is a deficient number, since it is larger than the sum of its proper divisors (25439640213).

74490920619 is a wasteful number, since it uses less digits than its factorization.

74490920619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152333337.

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 74490920619 in words is "seventy-four billion, four hundred ninety million, nine hundred twenty thousand, six hundred nineteen".