1357709905 has 8 divisors (see below), whose sum is σ = 1631449152. Its totient is φ = 1084703088.

The previous prime is 1357709897. The next prime is 1357709917. The reversal of 1357709905 is 5099077531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1357709905 - 2³ = 1357709897 is a prime.

It is a super-2 number, since 2×1357709905² = 3686752372270218050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179019 + ... + 186448.

It is an arithmetic number, because the mean of its divisors is an integer number (203931144).

Almost surely, 2^1357709905 is an apocalyptic number.

It is an amenable number.

1357709905 is a deficient number, since it is larger than the sum of its proper divisors (273739247).

1357709905 is an equidigital number, since it uses as much as digits as its factorization.

1357709905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366215.

The product of its (nonzero) digits is 297675, while the sum is 46.

The square root of 1357709905 is about 36847.1152873600. The cubic root of 1357709905 is about 1107.3094223724.

The spelling of 1357709905 in words is "one billion, three hundred fifty-seven million, seven hundred nine thousand, nine hundred five".