1004723149 has 2 divisors, whose sum is σ = 1004723150. Its totient is φ = 1004723148.

The previous prime is 1004723147. The next prime is 1004723219. The reversal of 1004723149 is 9413274001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 794676100 + 210047049 = 28190^2 + 14493^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004723149 - 2¹ = 1004723147 is a prime.

It is a super-2 number, since 2×1004723149² = 2018937212272952402, which contains 22 as substring.

Together with 1004723147, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1004723149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1004723147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502361574 + 502361575.

It is an arithmetic number, because the mean of its divisors is an integer number (502361575).

Almost surely, 2^1004723149 is an apocalyptic number.

It is an amenable number.

1004723149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004723149 is an equidigital number, since it uses as much as digits as its factorization.

1004723149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1004723149 is about 31697.3681715060. The cubic root of 1004723149 is about 1001.5719108018.

The spelling of 1004723149 in words is "one billion, four million, seven hundred twenty-three thousand, one hundred forty-nine".