1213119541 has 8 divisors (see below), whose sum is σ = 1285404120. Its totient is φ = 1140937728.

The previous prime is 1213119493. The next prime is 1213119547. The reversal of 1213119541 is 1459113121.

It can be written as a sum of positive squares in 4 ways, for example, as 19140625 + 1193978916 = 4375^2 + 34554^2 .

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

It is not a de Polignac number, because 1213119541 - 2²¹ = 1211022389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213119547) 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, 676 + ... + 49261.

It is an arithmetic number, because the mean of its divisors is an integer number (160675515).

Almost surely, 2^1213119541 is an apocalyptic number.

It is an amenable number.

1213119541 is a deficient number, since it is larger than the sum of its proper divisors (72284579).

1213119541 is a wasteful number, since it uses less digits than its factorization.

1213119541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51383.

The product of its digits is 1080, while the sum is 28.

The square root of 1213119541 is about 34829.8656471713. The cubic root of 1213119541 is about 1066.5172056970.

The spelling of 1213119541 in words is "one billion, two hundred thirteen million, one hundred nineteen thousand, five hundred forty-one".