1161490375 has 16 divisors (see below), whose sum is σ = 1462855680. Its totient is φ = 920656800.

The previous prime is 1161490357. The next prime is 1161490403. The reversal of 1161490375 is 5730941611.

It is a happy number.

It is not a de Polignac number, because 1161490375 - 2⁹ = 1161489863 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28999 + ... + 56248.

It is an arithmetic number, because the mean of its divisors is an integer number (91428480).

Almost surely, 2^1161490375 is an apocalyptic number.

1161490375 is a deficient number, since it is larger than the sum of its proper divisors (301365305).

1161490375 is an equidigital number, since it uses as much as digits as its factorization.

1161490375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85371 (or 85361 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 1161490375 is about 34080.6451670153. The cubic root of 1161490375 is about 1051.1673713464.

It can be divided in two parts, 1161 and 490375, that added together give a triangular number (491536 = T₉₉₁).

The spelling of 1161490375 in words is "one billion, one hundred sixty-one million, four hundred ninety thousand, three hundred seventy-five".