1149559973 has 2 divisors, whose sum is σ = 1149559974. Its totient is φ = 1149559972.

The previous prime is 1149559897. The next prime is 1149559997. The reversal of 1149559973 is 3799559411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1149345604 + 214369 = 33902^2 + 463^2 .

It is an emirp because it is prime and its reverse (3799559411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1149559973 - 2¹² = 1149555877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1149559273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574779986 + 574779987.

It is an arithmetic number, because the mean of its divisors is an integer number (574779987).

Almost surely, 2^1149559973 is an apocalyptic number.

It is an amenable number.

1149559973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149559973 is an equidigital number, since it uses as much as digits as its factorization.

1149559973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1530900, while the sum is 53.

The square root of 1149559973 is about 33905.1614507290. The cubic root of 1149559973 is about 1047.5559095476. Note that the first 3 decimals are identical.

The spelling of 1149559973 in words is "one billion, one hundred forty-nine million, five hundred fifty-nine thousand, nine hundred seventy-three".