1959085491 has 16 divisors (see below), whose sum is σ = 3017202048. Its totient is φ = 1117481600.

The previous prime is 1959085487. The next prime is 1959085507. The reversal of 1959085491 is 1945809591.

It is a cyclic number.

It is not a de Polignac number, because 1959085491 - 2² = 1959085487 is a prime.

It is a super-2 number, since 2×1959085491² = 7676031922093422162, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (1959085391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1745505 + ... + 1746626.

It is an arithmetic number, because the mean of its divisors is an integer number (188575128).

Almost surely, 2^1959085491 is an apocalyptic number.

1959085491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1959085491 is a deficient number, since it is larger than the sum of its proper divisors (1058116557).

1959085491 is a wasteful number, since it uses less digits than its factorization.

1959085491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3492162.

The product of its (nonzero) digits is 583200, while the sum is 51.

The square root of 1959085491 is about 44261.5577109527. The cubic root of 1959085491 is about 1251.2702800869.

The spelling of 1959085491 in words is "one billion, nine hundred fifty-nine million, eighty-five thousand, four hundred ninety-one".