1245692089 has 8 divisors (see below), whose sum is σ = 1290117888. Its totient is φ = 1202013120.

The previous prime is 1245692087. The next prime is 1245692113. The reversal of 1245692089 is 9802965421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1245692089 - 2¹ = 1245692087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1245692087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183312 + ... + 189985.

It is an arithmetic number, because the mean of its divisors is an integer number (161264736).

Almost surely, 2^1245692089 is an apocalyptic number.

It is an amenable number.

1245692089 is a deficient number, since it is larger than the sum of its proper divisors (44425799).

1245692089 is an equidigital number, since it uses as much as digits as its factorization.

1245692089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373415.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 1245692089 is about 35294.3634168404. The cubic root of 1245692089 is about 1075.9784389782.

The spelling of 1245692089 in words is "one billion, two hundred forty-five million, six hundred ninety-two thousand, eighty-nine".