1045481921 has 8 divisors (see below), whose sum is σ = 1142393664. Its totient is φ = 948881520.

The previous prime is 1045481917. The next prime is 1045481923. The reversal of 1045481921 is 1291845401.

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

It is a cyclic number.

It is not a de Polignac number, because 1045481921 - 2² = 1045481917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1045481923) 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, 70781 + ... + 84266.

It is an arithmetic number, because the mean of its divisors is an integer number (142799208).

Almost surely, 2^1045481921 is an apocalyptic number.

1045481921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1045481921 is a deficient number, since it is larger than the sum of its proper divisors (96911743).

1045481921 is a wasteful number, since it uses less digits than its factorization.

1045481921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155671.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 1045481921 is about 32333.9128625040. The cubic root of 1045481921 is about 1014.9364325579.

The spelling of 1045481921 in words is "one billion, forty-five million, four hundred eighty-one thousand, nine hundred twenty-one".