1764130421 has 2 divisors, whose sum is σ = 1764130422. Its totient is φ = 1764130420.

The previous prime is 1764130391. The next prime is 1764130451. The reversal of 1764130421 is 1240314671.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1764130391) and next prime (1764130451).

It can be written as a sum of positive squares in only one way, i.e., 1007110225 + 757020196 = 31735^2 + 27514^2 .

It is a cyclic number.

It is not a de Polignac number, because 1764130421 - 2³⁰ = 690388597 is a prime.

It is a super-2 number, since 2×1764130421² = 6224312284595274482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1764130451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 882065210 + 882065211.

It is an arithmetic number, because the mean of its divisors is an integer number (882065211).

Almost surely, 2^1764130421 is an apocalyptic number.

It is an amenable number.

1764130421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1764130421 is an equidigital number, since it uses as much as digits as its factorization.

1764130421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1764130421 is about 42001.5526022551. The cubic root of 1764130421 is about 1208.3059007496.

The spelling of 1764130421 in words is "one billion, seven hundred sixty-four million, one hundred thirty thousand, four hundred twenty-one".