1145187751 has 4 divisors (see below), whose sum is σ = 1149750504. Its totient is φ = 1140625000.

The previous prime is 1145187737. The next prime is 1145187761. The reversal of 1145187751 is 1577815411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1577815411 = 359 ⋅4395029.

It is a cyclic number.

It is not a de Polignac number, because 1145187751 - 2¹³ = 1145179559 is a prime.

It is a super-2 number, since 2×1145187751² = 2622909970080876002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145187731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2281000 + ... + 2281501.

It is an arithmetic number, because the mean of its divisors is an integer number (287437626).

Almost surely, 2^1145187751 is an apocalyptic number.

1145187751 is a deficient number, since it is larger than the sum of its proper divisors (4562753).

1145187751 is an equidigital number, since it uses as much as digits as its factorization.

1145187751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4562752.

The product of its digits is 39200, while the sum is 40.

The square root of 1145187751 is about 33840.6227927324. The cubic root of 1145187751 is about 1046.2261352300.

The spelling of 1145187751 in words is "one billion, one hundred forty-five million, one hundred eighty-seven thousand, seven hundred fifty-one".