1357441698649 has 9 divisors (see below), whose sum is σ = 1395165175677. Its totient is φ = 1320712141824.

The previous prime is 1357441698629. The next prime is 1357441698667. The reversal of 1357441698649 is 9468961447531.

The square root of 1357441698649 is 1165093.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 371654833225 + 985786865424 = 609635^2 + 992868^2 .

It is not a de Polignac number, because 1357441698649 - 2¹³ = 1357441690457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1357441698629) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 43092697 + ... + 43124185.

It is an arithmetic number, because the mean of its divisors is an integer number (155018352853).

Almost surely, 2^{1357441698649} is an apocalyptic number.

1357441698649 is the 1165093-rd square number.

1357441698649 is the 582547-th centered octagonal number.

It is an amenable number.

1357441698649 is a deficient number, since it is larger than the sum of its proper divisors (37723477028).

1357441698649 is an frugal number, since it uses more digits than its factorization.

1357441698649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63052 (or 31526 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 67.

The spelling of 1357441698649 in words is "one trillion, three hundred fifty-seven billion, four hundred forty-one million, six hundred ninety-eight thousand, six hundred forty-nine".