1391134955 has 8 divisors (see below), whose sum is σ = 1907842272. Its totient is φ = 953921088.

The previous prime is 1391134949. The next prime is 1391134957. The reversal of 1391134955 is 5594311931.

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 1391134955 - 2⁶ = 1391134891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1391134957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19873322 + ... + 19873391.

It is an arithmetic number, because the mean of its divisors is an integer number (238480284).

Almost surely, 2^1391134955 is an apocalyptic number.

1391134955 is a deficient number, since it is larger than the sum of its proper divisors (516707317).

1391134955 is an equidigital number, since it uses as much as digits as its factorization.

1391134955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39746725.

The product of its digits is 72900, while the sum is 41.

The square root of 1391134955 is about 37297.9215908876. The cubic root of 1391134955 is about 1116.3226958186.

The spelling of 1391134955 in words is "one billion, three hundred ninety-one million, one hundred thirty-four thousand, nine hundred fifty-five".