1022041949 has 4 divisors (see below), whose sum is σ = 1022633436. Its totient is φ = 1021450464.

The previous prime is 1022041903. The next prime is 1022041981. The reversal of 1022041949 is 9491402201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9491402201 = 27061 ⋅350741.

It can be written as a sum of positive squares in 2 ways, for example, as 425803225 + 596238724 = 20635^2 + 24418^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022041949 - 2²⁰ = 1020993373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022043949) 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, 293144 + ... + 296609.

It is an arithmetic number, because the mean of its divisors is an integer number (255658359).

Almost surely, 2^1022041949 is an apocalyptic number.

It is an amenable number.

1022041949 is a deficient number, since it is larger than the sum of its proper divisors (591487).

1022041949 is an equidigital number, since it uses as much as digits as its factorization.

1022041949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591486.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1022041949 is about 31969.3908137143. The cubic root of 1022041949 is about 1007.2939847675.

The spelling of 1022041949 in words is "one billion, twenty-two million, forty-one thousand, nine hundred forty-nine".