1914138 has 16 divisors (see below), whose sum is σ = 4253760. Its totient is φ = 638028.

The previous prime is 1914131. The next prime is 1914139. The reversal of 1914138 is 8314191.

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 (1914131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17670 + ... + 17777.

It is an arithmetic number, because the mean of its divisors is an integer number (265860).

2^1914138 is an apocalyptic number.

1914138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1914138 is an abundant number, since it is smaller than the sum of its proper divisors (2339622).

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

1914138 is a wasteful number, since it uses less digits than its factorization.

1914138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35458 (or 35452 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 1914138 is about 1383.5237619933. The cubic root of 1914138 is about 124.1626810326.

The spelling of 1914138 in words is "one million, nine hundred fourteen thousand, one hundred thirty-eight".