1951018 has 4 divisors (see below), whose sum is σ = 2926530. Its totient is φ = 975508.

The previous prime is 1951013. The next prime is 1951043. The reversal of 1951018 is 8101591.

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., 1830609 + 120409 = 1353^2 + 347^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1950983 and 1951001.

It is not an unprimeable number, because it can be changed into a prime (1951013) 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 as a sum of consecutive naturals, namely, 487753 + ... + 487756.

2^1951018 is an apocalyptic number.

1951018 is a deficient number, since it is larger than the sum of its proper divisors (975512).

1951018 is an equidigital number, since it uses as much as digits as its factorization.

1951018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975511.

The product of its (nonzero) digits is 360, while the sum is 25.

The square root of 1951018 is about 1396.7884592879. The cubic root of 1951018 is about 124.9550344934.

The spelling of 1951018 in words is "one million, nine hundred fifty-one thousand, eighteen".