1357777889 has 4 divisors (see below), whose sum is σ = 1462222356. Its totient is φ = 1253333424.

The previous prime is 1357777873. The next prime is 1357777901. The reversal of 1357777889 is 9887777531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9887777531 = 1039 ⋅9516629.

It can be written as a sum of positive squares in 2 ways, for example, as 481144225 + 876633664 = 21935^2 + 29608^2 .

It is a cyclic number.

It is not a de Polignac number, because 1357777889 - 2⁴ = 1357777873 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1357777489) 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, 52222214 + ... + 52222239.

It is an arithmetic number, because the mean of its divisors is an integer number (365555589).

Almost surely, 2^1357777889 is an apocalyptic number.

It is an amenable number.

1357777889 is a deficient number, since it is larger than the sum of its proper divisors (104444467).

1357777889 is a wasteful number, since it uses less digits than its factorization.

1357777889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104444466.

The product of its digits is 20744640, while the sum is 62.

The square root of 1357777889 is about 36848.0377903627. The cubic root of 1357777889 is about 1107.3279040002.

The spelling of 1357777889 in words is "one billion, three hundred fifty-seven million, seven hundred seventy-seven thousand, eight hundred eighty-nine".