1672354657 has 2 divisors, whose sum is σ = 1672354658. Its totient is φ = 1672354656.

The previous prime is 1672354631. The next prime is 1672354703. The reversal of 1672354657 is 7564532761.

It is an a-pointer prime, because the next prime (1672354703) can be obtained adding 1672354657 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1488725056 + 183629601 = 38584^2 + 13551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1672354657 is a prime.

It is not a weakly prime, because it can be changed into another prime (1672324657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836177328 + 836177329.

It is an arithmetic number, because the mean of its divisors is an integer number (836177329).

Almost surely, 2^1672354657 is an apocalyptic number.

It is an amenable number.

1672354657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672354657 is an equidigital number, since it uses as much as digits as its factorization.

1672354657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 46.

The square root of 1672354657 is about 40894.4330807996. The cubic root of 1672354657 is about 1186.9783416880.

The spelling of 1672354657 in words is "one billion, six hundred seventy-two million, three hundred fifty-four thousand, six hundred fifty-seven".