1061889955 has 128 divisors (see below), whose sum is σ = 1741824000. Its totient is φ = 603832320.

The previous prime is 1061889949. The next prime is 1061889977. The reversal of 1061889955 is 5599881601.

It is not a de Polignac number, because 1061889955 - 2⁷ = 1061889827 is a prime.

It is a super-2 number, since 2×1061889955² = 2255220553059804050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13441606 + ... + 13441684.

It is an arithmetic number, because the mean of its divisors is an integer number (13608000).

Almost surely, 2^1061889955 is an apocalyptic number.

1061889955 is a deficient number, since it is larger than the sum of its proper divisors (679934045).

1061889955 is a wasteful number, since it uses less digits than its factorization.

1061889955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197.

The product of its (nonzero) digits is 777600, while the sum is 52.

The square root of 1061889955 is about 32586.6530192961. The cubic root of 1061889955 is about 1020.2184444997.

The spelling of 1061889955 in words is "one billion, sixty-one million, eight hundred eighty-nine thousand, nine hundred fifty-five".