1025091849 has 8 divisors (see below), whose sum is σ = 1410879232. Its totient is φ = 661349520.

The previous prime is 1025091827. The next prime is 1025091869. The reversal of 1025091849 is 9481905201.

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

It is not a de Polignac number, because 1025091849 - 2⁸ = 1025091593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1025091869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5511154 + ... + 5511339.

It is an arithmetic number, because the mean of its divisors is an integer number (176359904).

Almost surely, 2^1025091849 is an apocalyptic number.

It is an amenable number.

1025091849 is a deficient number, since it is larger than the sum of its proper divisors (385787383).

1025091849 is a wasteful number, since it uses less digits than its factorization.

1025091849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11022527.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 1025091849 is about 32017.0555954166. The cubic root of 1025091849 is about 1008.2949531704.

The spelling of 1025091849 in words is "one billion, twenty-five million, ninety-one thousand, eight hundred forty-nine".