1238401465 has 48 divisors (see below), whose sum is σ = 1825469568. Its totient is φ = 787304448.

The previous prime is 1238401453. The next prime is 1238401469. The reversal of 1238401465 is 5641048321.

It is not a de Polignac number, because 1238401465 - 2⁹ = 1238400953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1238401465.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238401469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7597474 + ... + 7597636.

It is an arithmetic number, because the mean of its divisors is an integer number (38030616).

Almost surely, 2^1238401465 is an apocalyptic number.

It is an amenable number.

1238401465 is a deficient number, since it is larger than the sum of its proper divisors (587068103).

1238401465 is a wasteful number, since it uses less digits than its factorization.

1238401465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 1238401465 is about 35190.9287317058. The cubic root of 1238401465 is about 1073.8752150980.

Adding to 1238401465 its reverse (5641048321), we get a palindrome (6879449786).

The spelling of 1238401465 in words is "one billion, two hundred thirty-eight million, four hundred one thousand, four hundred sixty-five".