1060820391 has 8 divisors (see below), whose sum is σ = 1417043824. Its totient is φ = 705905280.

The previous prime is 1060820389. The next prime is 1060820393. The reversal of 1060820391 is 1930280601.

It is an interprime number because it is at equal distance from previous prime (1060820389) and next prime (1060820393).

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

It is not a de Polignac number, because 1060820391 - 2¹ = 1060820389 is a prime.

It is a super-2 number, since 2×1060820391² = 2250679803922785762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1060820393) 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, 325186 + ... + 328431.

It is an arithmetic number, because the mean of its divisors is an integer number (177130478).

Almost surely, 2^1060820391 is an apocalyptic number.

1060820391 is a deficient number, since it is larger than the sum of its proper divisors (356223433).

1060820391 is an equidigital number, since it uses as much as digits as its factorization.

1060820391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654161.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1060820391 is about 32570.2378100007. The cubic root of 1060820391 is about 1019.8757989871.

The spelling of 1060820391 in words is "one billion, sixty million, eight hundred twenty thousand, three hundred ninety-one".