1673653357 has 2 divisors, whose sum is σ = 1673653358. Its totient is φ = 1673653356.

The previous prime is 1673653343. The next prime is 1673653369. The reversal of 1673653357 is 7533563761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1428386436 + 245266921 = 37794^2 + 15661^2 .

It is a cyclic number.

It is not a de Polignac number, because 1673653357 - 2²³ = 1665264749 is a prime.

It is a super-2 number, since 2×1673653357² = 5602231118794738898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1673653957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836826678 + 836826679.

It is an arithmetic number, because the mean of its divisors is an integer number (836826679).

Almost surely, 2^1673653357 is an apocalyptic number.

It is an amenable number.

1673653357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1673653357 is an equidigital number, since it uses as much as digits as its factorization.

1673653357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1190700, while the sum is 46.

The square root of 1673653357 is about 40910.3086886423. The cubic root of 1673653357 is about 1187.2855193359.

The spelling of 1673653357 in words is "one billion, six hundred seventy-three million, six hundred fifty-three thousand, three hundred fifty-seven".