1357228785 has 16 divisors (see below), whose sum is σ = 2368981440. Its totient is φ = 658050240.

The previous prime is 1357228771. The next prime is 1357228787. The reversal of 1357228785 is 5878227531.

It is not a de Polignac number, because 1357228785 - 2¹⁰ = 1357227761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1357228787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4112650 + ... + 4112979.

It is an arithmetic number, because the mean of its divisors is an integer number (148061340).

Almost surely, 2^1357228785 is an apocalyptic number.

1357228785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1357228785 is a deficient number, since it is larger than the sum of its proper divisors (1011752655).

1357228785 is a wasteful number, since it uses less digits than its factorization.

1357228785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8225648.

The product of its digits is 940800, while the sum is 48.

The square root of 1357228785 is about 36840.5861109728. The cubic root of 1357228785 is about 1107.1786110093.

The spelling of 1357228785 in words is "one billion, three hundred fifty-seven million, two hundred twenty-eight thousand, seven hundred eighty-five".