1357648741 has 4 divisors (see below), whose sum is σ = 1358242092. Its totient is φ = 1357055392.

The previous prime is 1357648727. The next prime is 1357648759. The reversal of 1357648741 is 1478467531.

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

It can be written as a sum of positive squares in 2 ways, for example, as 643636900 + 714011841 = 25370^2 + 26721^2 .

It is a cyclic number.

It is not a de Polignac number, because 1357648741 - 2⁷ = 1357648613 is a prime.

It is a super-3 number, since 3×1357648741³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1357648691 and 1357648700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1357648771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293230 + ... + 297823.

It is an arithmetic number, because the mean of its divisors is an integer number (339560523).

Almost surely, 2^1357648741 is an apocalyptic number.

It is an amenable number.

1357648741 is a deficient number, since it is larger than the sum of its proper divisors (593351).

1357648741 is an equidigital number, since it uses as much as digits as its factorization.

1357648741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593350.

The product of its digits is 564480, while the sum is 46.

The square root of 1357648741 is about 36846.2853080199. The cubic root of 1357648741 is about 1107.2927942522.

The spelling of 1357648741 in words is "one billion, three hundred fifty-seven million, six hundred forty-eight thousand, seven hundred forty-one".