1051856913 has 8 divisors (see below), whose sum is σ = 1418234400. Its totient is φ = 693358688.

The previous prime is 1051856899. The next prime is 1051856959. The reversal of 1051856913 is 3196581501.

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 1051856913 - 2¹² = 1051852817 is a prime.

It is a super-2 number, since 2×1051856913² = 2212805930851779138, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1051856713) 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, 1969503 + ... + 1970036.

It is an arithmetic number, because the mean of its divisors is an integer number (177279300).

Almost surely, 2^1051856913 is an apocalyptic number.

It is an amenable number.

1051856913 is a deficient number, since it is larger than the sum of its proper divisors (366377487).

1051856913 is an equidigital number, since it uses as much as digits as its factorization.

1051856913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939631.

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 1051856913 is about 32432.3436248446. The cubic root of 1051856913 is about 1016.9951657382.

The spelling of 1051856913 in words is "one billion, fifty-one million, eight hundred fifty-six thousand, nine hundred thirteen".