1153481974 has 4 divisors (see below), whose sum is σ = 1730222964. Its totient is φ = 576740986.

The previous prime is 1153481971. The next prime is 1153481981. The reversal of 1153481974 is 4791843511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1153481974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153481971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288370492 + ... + 288370495.

It is an arithmetic number, because the mean of its divisors is an integer number (432555741).

Almost surely, 2^1153481974 is an apocalyptic number.

1153481974 is a deficient number, since it is larger than the sum of its proper divisors (576740990).

1153481974 is an equidigital number, since it uses as much as digits as its factorization.

1153481974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576740989.

The product of its digits is 120960, while the sum is 43.

The square root of 1153481974 is about 33962.9500191017. The cubic root of 1153481974 is about 1048.7458871218.

The spelling of 1153481974 in words is "one billion, one hundred fifty-three million, four hundred eighty-one thousand, nine hundred seventy-four".