1954138 has 4 divisors (see below), whose sum is σ = 2931210. Its totient is φ = 977068.

The previous prime is 1954111. The next prime is 1954151. The reversal of 1954138 is 8314591.

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

It can be written as a sum of positive squares in only one way, i.e., 1940449 + 13689 = 1393^2 + 117^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488533 + ... + 488536.

2^1954138 is an apocalyptic number.

1954138 is a deficient number, since it is larger than the sum of its proper divisors (977072).

1954138 is an equidigital number, since it uses as much as digits as its factorization.

1954138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977071.

The product of its digits is 4320, while the sum is 31.

The square root of 1954138 is about 1397.9048608543. The cubic root of 1954138 is about 125.0216069316.

The spelling of 1954138 in words is "one million, nine hundred fifty-four thousand, one hundred thirty-eight".