1357657099 has 4 divisors (see below), whose sum is σ = 1358163936. Its totient is φ = 1357150264.

The previous prime is 1357657097. The next prime is 1357657109. The reversal of 1357657099 is 9907567531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1357657099 - 2¹ = 1357657097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1357657097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249379 + ... + 254764.

It is an arithmetic number, because the mean of its divisors is an integer number (339540984).

Almost surely, 2^1357657099 is an apocalyptic number.

1357657099 is a deficient number, since it is larger than the sum of its proper divisors (506837).

1357657099 is an equidigital number, since it uses as much as digits as its factorization.

1357657099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506836.

The product of its (nonzero) digits is 1786050, while the sum is 52.

The square root of 1357657099 is about 36846.3987249772. The cubic root of 1357657099 is about 1107.2950664978.

The spelling of 1357657099 in words is "one billion, three hundred fifty-seven million, six hundred fifty-seven thousand, ninety-nine".