1209361145 has 8 divisors (see below), whose sum is σ = 1451431680. Its totient is φ = 967356720.

The previous prime is 1209361121. The next prime is 1209361157. The reversal of 1209361145 is 5411639021.

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

It is not a de Polignac number, because 1209361145 - 2²⁴ = 1192583929 is a prime.

It is a super-2 number, since 2×1209361145² = 2925108758071422050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43640 + ... + 65750.

It is an arithmetic number, because the mean of its divisors is an integer number (181428960).

Almost surely, 2^1209361145 is an apocalyptic number.

It is an amenable number.

1209361145 is a deficient number, since it is larger than the sum of its proper divisors (242070535).

1209361145 is a wasteful number, since it uses less digits than its factorization.

1209361145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33055.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1209361145 is about 34775.8701544620. The cubic root of 1209361145 is about 1065.4146650966.

The spelling of 1209361145 in words is "one billion, two hundred nine million, three hundred sixty-one thousand, one hundred forty-five".