1674399865 has 16 divisors (see below), whose sum is σ = 2036736000. Its totient is φ = 1321250112.

The previous prime is 1674399847. The next prime is 1674399893. The reversal of 1674399865 is 5689934761.

It is a cyclic number.

It is not a de Polignac number, because 1674399865 - 2²¹ = 1672302713 is a prime.

It is a super-2 number, since 2×1674399865² = 5607229815824036450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 655611 + ... + 658159.

It is an arithmetic number, because the mean of its divisors is an integer number (127296000).

Almost surely, 2^1674399865 is an apocalyptic number.

It is an amenable number.

1674399865 is a deficient number, since it is larger than the sum of its proper divisors (362336135).

1674399865 is a wasteful number, since it uses less digits than its factorization.

1674399865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4296.

The product of its digits is 9797760, while the sum is 58.

The square root of 1674399865 is about 40919.4313865674. The cubic root of 1674399865 is about 1187.4620167352.

The spelling of 1674399865 in words is "one billion, six hundred seventy-four million, three hundred ninety-nine thousand, eight hundred sixty-five".