1146135251 has 4 divisors (see below), whose sum is σ = 1147642104. Its totient is φ = 1144628400.

The previous prime is 1146135227. The next prime is 1146135311. The reversal of 1146135251 is 1525316411.

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 1146135251 - 2¹⁸ = 1145873107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1146125251) 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, 752285 + ... + 753806.

It is an arithmetic number, because the mean of its divisors is an integer number (286910526).

Almost surely, 2^1146135251 is an apocalyptic number.

1146135251 is a deficient number, since it is larger than the sum of its proper divisors (1506853).

1146135251 is an equidigital number, since it uses as much as digits as its factorization.

1146135251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506852.

The product of its digits is 3600, while the sum is 29.

The square root of 1146135251 is about 33854.6193450761. The cubic root of 1146135251 is about 1046.5145962257.

The spelling of 1146135251 in words is "one billion, one hundred forty-six million, one hundred thirty-five thousand, two hundred fifty-one".