1051219394 has 4 divisors (see below), whose sum is σ = 1576829094. Its totient is φ = 525609696.

The previous prime is 1051219391. The next prime is 1051219399. The reversal of 1051219394 is 4939121501.

It is a happy number.

1051219394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4939121501 = 16787 ⋅294223.

It can be written as a sum of positive squares in only one way, i.e., 847101025 + 204118369 = 29105^2 + 14287^2 .

It is a super-2 number, since 2×1051219394² = 2210124428643454472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1051219391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262804847 + ... + 262804850.

Almost surely, 2^1051219394 is an apocalyptic number.

1051219394 is a deficient number, since it is larger than the sum of its proper divisors (525609700).

1051219394 is an equidigital number, since it uses as much as digits as its factorization.

1051219394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525609699.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 1051219394 is about 32422.5136903356. The cubic root of 1051219394 is about 1016.7896609895.

The spelling of 1051219394 in words is "one billion, fifty-one million, two hundred nineteen thousand, three hundred ninety-four".