1652421973 has 2 divisors, whose sum is σ = 1652421974. Its totient is φ = 1652421972.

The previous prime is 1652421929. The next prime is 1652421977. The reversal of 1652421973 is 3791242561.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1604563249 + 47858724 = 40057^2 + 6918^2 .

It is a cyclic number.

It is not a de Polignac number, because 1652421973 - 2⁹ = 1652421461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1652421977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826210986 + 826210987.

It is an arithmetic number, because the mean of its divisors is an integer number (826210987).

Almost surely, 2^1652421973 is an apocalyptic number.

It is an amenable number.

1652421973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1652421973 is an equidigital number, since it uses as much as digits as its factorization.

1652421973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 1652421973 is about 40649.9935178347. The cubic root of 1652421973 is about 1182.2436420556.

The spelling of 1652421973 in words is "one billion, six hundred fifty-two million, four hundred twenty-one thousand, nine hundred seventy-three".