1051378291 has 8 divisors (see below), whose sum is σ = 1056099024. Its totient is φ = 1046668800.

The previous prime is 1051378283. The next prime is 1051378327. The reversal of 1051378291 is 1928731501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1051378291 - 2³ = 1051378283 is a prime.

It is a super-2 number, since 2×1051378291² = 2210792621572161362, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1051378291.

It is not an unprimeable number, because it can be changed into a prime (1051378201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223435 + ... + 228091.

It is an arithmetic number, because the mean of its divisors is an integer number (132012378).

Almost surely, 2^1051378291 is an apocalyptic number.

1051378291 is a deficient number, since it is larger than the sum of its proper divisors (4720733).

1051378291 is an equidigital number, since it uses as much as digits as its factorization.

1051378291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5621.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 1051378291 is about 32424.9640092321. The cubic root of 1051378291 is about 1016.8408893337.

It can be divided in two parts, 10513 and 78291, that added together give a square (88804 = 298²).

The spelling of 1051378291 in words is "one billion, fifty-one million, three hundred seventy-eight thousand, two hundred ninety-one".