1071892245 has 32 divisors (see below), whose sum is σ = 1829036160. Its totient is φ = 534159360.

The previous prime is 1071892231. The next prime is 1071892273. The reversal of 1071892245 is 5422981701.

It is not a de Polignac number, because 1071892245 - 2¹⁶ = 1071826709 is a prime.

It is a super-2 number, since 2×1071892245² = 2297905969782280050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20325 + ... + 50565.

It is an arithmetic number, because the mean of its divisors is an integer number (57157380).

Almost surely, 2^1071892245 is an apocalyptic number.

1071892245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1071892245 is a deficient number, since it is larger than the sum of its proper divisors (757143915).

1071892245 is a wasteful number, since it uses less digits than its factorization.

1071892245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30405.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 1071892245 is about 32739.7655000765. The cubic root of 1071892245 is about 1023.4116967463.

The spelling of 1071892245 in words is "one billion, seventy-one million, eight hundred ninety-two thousand, two hundred forty-five".