1139847551 has 2 divisors, whose sum is σ = 1139847552. Its totient is φ = 1139847550.

The previous prime is 1139847517. The next prime is 1139847559. The reversal of 1139847551 is 1557489311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1139847551 - 2¹⁰ = 1139846527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1139847559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569923775 + 569923776.

It is an arithmetic number, because the mean of its divisors is an integer number (569923776).

Almost surely, 2^1139847551 is an apocalyptic number.

1139847551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139847551 is an equidigital number, since it uses as much as digits as its factorization.

1139847551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 44.

The square root of 1139847551 is about 33761.6283819368. The cubic root of 1139847551 is about 1044.5973589798.

The spelling of 1139847551 in words is "one billion, one hundred thirty-nine million, eight hundred forty-seven thousand, five hundred fifty-one".