1405012338 has 16 divisors (see below), whose sum is σ = 3122249760. Its totient is φ = 468337428.

The previous prime is 1405012333. The next prime is 1405012421. The reversal of 1405012338 is 8332105041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1405012333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13009320 + ... + 13009427.

It is an arithmetic number, because the mean of its divisors is an integer number (195140610).

Almost surely, 2^1405012338 is an apocalyptic number.

1405012338 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1405012338 is an abundant number, since it is smaller than the sum of its proper divisors (1717237422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1405012338 is a wasteful number, since it uses less digits than its factorization.

1405012338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26018758 (or 26018752 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1405012338 is about 37483.4942074508. The cubic root of 1405012338 is about 1120.0224107973.

Adding to 1405012338 its reverse (8332105041), we get a palindrome (9737117379).

The spelling of 1405012338 in words is "one billion, four hundred five million, twelve thousand, three hundred thirty-eight".