1400011838 has 4 divisors (see below), whose sum is σ = 2100017760. Its totient is φ = 700005918.

The previous prime is 1400011819. The next prime is 1400011843. The reversal of 1400011838 is 8381100041.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350002958 + ... + 350002961.

It is an arithmetic number, because the mean of its divisors is an integer number (525004440).

Almost surely, 2^1400011838 is an apocalyptic number.

1400011838 is a deficient number, since it is larger than the sum of its proper divisors (700005922).

1400011838 is an equidigital number, since it uses as much as digits as its factorization.

1400011838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700005921.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 1400011838 is about 37416.7320593341. The cubic root of 1400011838 is about 1118.6920951772.

Adding to 1400011838 its reverse (8381100041), we get a palindrome (9781111879).

The spelling of 1400011838 in words is "one billion, four hundred million, eleven thousand, eight hundred thirty-eight".