1017881923 has 2 divisors, whose sum is σ = 1017881924. Its totient is φ = 1017881922.

The previous prime is 1017881911. The next prime is 1017881957. The reversal of 1017881923 is 3291887101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1017881923 is a prime.

It is not a weakly prime, because it can be changed into another prime (1017881903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 508940961 + 508940962.

It is an arithmetic number, because the mean of its divisors is an integer number (508940962).

Almost surely, 2^1017881923 is an apocalyptic number.

1017881923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1017881923 is an equidigital number, since it uses as much as digits as its factorization.

1017881923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 1017881923 is about 31904.2618312977. The cubic root of 1017881923 is about 1005.9254605673.

The spelling of 1017881923 in words is "one billion, seventeen million, eight hundred eighty-one thousand, nine hundred twenty-three".