1213740355 has 8 divisors (see below), whose sum is σ = 1466967600. Its totient is φ = 964006176.

The previous prime is 1213740323. The next prime is 1213740377. The reversal of 1213740355 is 5530473121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213740355 - 2⁵ = 1213740323 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 872500 + ... + 873889.

It is an arithmetic number, because the mean of its divisors is an integer number (183370950).

Almost surely, 2^1213740355 is an apocalyptic number.

1213740355 is a deficient number, since it is larger than the sum of its proper divisors (253227245).

1213740355 is a wasteful number, since it uses less digits than its factorization.

1213740355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746533.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 1213740355 is about 34838.7766002195. The cubic root of 1213740355 is about 1066.6991047535.

The spelling of 1213740355 in words is "one billion, two hundred thirteen million, seven hundred forty thousand, three hundred fifty-five".