1234003681 has 2 divisors, whose sum is σ = 1234003682. Its totient is φ = 1234003680.

The previous prime is 1234003663. The next prime is 1234003721. The reversal of 1234003681 is 1863004321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 658435600 + 575568081 = 25660^2 + 23991^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234003681 - 2¹⁹ = 1233479393 is a prime.

It is a super-2 number, since 2×1234003681² = 3045530169443099522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1234003651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617001840 + 617001841.

It is an arithmetic number, because the mean of its divisors is an integer number (617001841).

Almost surely, 2^1234003681 is an apocalyptic number.

It is an amenable number.

1234003681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234003681 is an equidigital number, since it uses as much as digits as its factorization.

1234003681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1234003681 is about 35128.3885340617. The cubic root of 1234003681 is about 1072.6025333987.

The spelling of 1234003681 in words is "one billion, two hundred thirty-four million, three thousand, six hundred eighty-one".