1673993761 has 4 divisors (see below), whose sum is σ = 1826175024. Its totient is φ = 1521812500.

The previous prime is 1673993759. The next prime is 1673993807.

1673993761 is nontrivially palindromic in base 10.

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.

It is a cyclic number.

It is not a de Polignac number, because 1673993761 - 2¹ = 1673993759 is a prime.

It is a super-2 number, since 2×1673993761² = 5604510223733850242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1673993699 and 1673993708.

It is not an unprimeable number, because it can be changed into a prime (1673993561) 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, 76090615 + ... + 76090636.

It is an arithmetic number, because the mean of its divisors is an integer number (456543756).

Almost surely, 2^1673993761 is an apocalyptic number.

1673993761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1673993761 is a deficient number, since it is larger than the sum of its proper divisors (152181263).

1673993761 is a wasteful number, since it uses less digits than its factorization.

1673993761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152181262.

The product of its digits is 1285956, while the sum is 52.

The square root of 1673993761 is about 40914.4688466073. The cubic root of 1673993761 is about 1187.3660077956.

The spelling of 1673993761 in words is "one billion, six hundred seventy-three million, nine hundred ninety-three thousand, seven hundred sixty-one".