351693649 has 2 divisors, whose sum is σ = 351693650. Its totient is φ = 351693648.

The previous prime is 351693599. The next prime is 351693677. The reversal of 351693649 is 946396153.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348083649 + 3610000 = 18657^2 + 1900^2 .

It is a cyclic number.

It is not a de Polignac number, because 351693649 - 2⁷ = 351693521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 351693599 and 351693608.

It is not a weakly prime, because it can be changed into another prime (351690649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175846824 + 175846825.

It is an arithmetic number, because the mean of its divisors is an integer number (175846825).

Almost surely, 2^351693649 is an apocalyptic number.

It is an amenable number.

351693649 is a deficient number, since it is larger than the sum of its proper divisors (1).

351693649 is an equidigital number, since it uses as much as digits as its factorization.

351693649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 46.

The square root of 351693649 is about 18753.4969805634. The cubic root of 351693649 is about 705.8647731920.

The spelling of 351693649 in words is "three hundred fifty-one million, six hundred ninety-three thousand, six hundred forty-nine".