1151341391 has 4 divisors (see below), whose sum is σ = 1155020112. Its totient is φ = 1147662672.

The previous prime is 1151341379. The next prime is 1151341393. The reversal of 1151341391 is 1931431511.

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

It is a cyclic number.

It is not a de Polignac number, because 1151341391 - 2¹⁸ = 1151079247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151341393) 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, 1838891 + ... + 1839516.

It is an arithmetic number, because the mean of its divisors is an integer number (288755028).

Almost surely, 2^1151341391 is an apocalyptic number.

1151341391 is a deficient number, since it is larger than the sum of its proper divisors (3678721).

1151341391 is an equidigital number, since it uses as much as digits as its factorization.

1151341391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3678720.

The product of its digits is 1620, while the sum is 29.

The square root of 1151341391 is about 33931.4218829686. The cubic root of 1151341391 is about 1048.0967460047.

The spelling of 1151341391 in words is "one billion, one hundred fifty-one million, three hundred forty-one thousand, three hundred ninety-one".