1013432921 has 2 divisors, whose sum is σ = 1013432922. Its totient is φ = 1013432920.

The previous prime is 1013432909. The next prime is 1013432971. The reversal of 1013432921 is 1292343101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 591705625 + 421727296 = 24325^2 + 20536^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013432921 - 2⁶ = 1013432857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1013432971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506716460 + 506716461.

It is an arithmetic number, because the mean of its divisors is an integer number (506716461).

Almost surely, 2^1013432921 is an apocalyptic number.

It is an amenable number.

1013432921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013432921 is an equidigital number, since it uses as much as digits as its factorization.

1013432921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1013432921 is about 31834.4612173663. The cubic root of 1013432921 is about 1004.4577393658.

The spelling of 1013432921 in words is "one billion, thirteen million, four hundred thirty-two thousand, nine hundred twenty-one".