1149141921 has 4 divisors (see below), whose sum is σ = 1532189232. Its totient is φ = 766094612.

The previous prime is 1149141901. The next prime is 1149141949. The reversal of 1149141921 is 1291419411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1149141921 - 2¹⁵ = 1149109153 is a prime.

It is a super-3 number, since 3×1149141921³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1149141901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191523651 + ... + 191523656.

It is an arithmetic number, because the mean of its divisors is an integer number (383047308).

Almost surely, 2^1149141921 is an apocalyptic number.

It is an amenable number.

1149141921 is a deficient number, since it is larger than the sum of its proper divisors (383047311).

1149141921 is an equidigital number, since it uses as much as digits as its factorization.

1149141921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383047310.

The product of its digits is 2592, while the sum is 33.

The square root of 1149141921 is about 33898.9958700844. The cubic root of 1149141921 is about 1047.4289085065.

The spelling of 1149141921 in words is "one billion, one hundred forty-nine million, one hundred forty-one thousand, nine hundred twenty-one".