1405138834 has 8 divisors (see below), whose sum is σ = 2299318128. Its totient is φ = 638699460.

The previous prime is 1405138831. The next prime is 1405138849. The reversal of 1405138834 is 4388315041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1405138793 and 1405138802.

It is not an unprimeable number, because it can be changed into a prime (1405138831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31934952 + ... + 31934995.

It is an arithmetic number, because the mean of its divisors is an integer number (287414766).

Almost surely, 2^1405138834 is an apocalyptic number.

1405138834 is a deficient number, since it is larger than the sum of its proper divisors (894179294).

1405138834 is a wasteful number, since it uses less digits than its factorization.

1405138834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63869960.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 1405138834 is about 37485.1815255042. The cubic root of 1405138834 is about 1120.0560223890.

The spelling of 1405138834 in words is "one billion, four hundred five million, one hundred thirty-eight thousand, eight hundred thirty-four".