1061955380 has 12 divisors (see below), whose sum is σ = 2230106340. Its totient is φ = 424782144.

The previous prime is 1061955343. The next prime is 1061955397. The reversal of 1061955380 is 835591601.

It can be written as a sum of positive squares in 2 ways, for example, as 303944356 + 758011024 = 17434^2 + 27532^2 .

It is a super-2 number, since 2×1061955380² = 2255498458221888800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26548865 + ... + 26548904.

It is an arithmetic number, because the mean of its divisors is an integer number (185842195).

Almost surely, 2^1061955380 is an apocalyptic number.

1061955380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061955380 is an abundant number, since it is smaller than the sum of its proper divisors (1168150960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1061955380 is a wasteful number, since it uses less digits than its factorization.

1061955380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53097778 (or 53097776 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 1061955380 is about 32587.6568657521. The cubic root of 1061955380 is about 1020.2393965832.

The spelling of 1061955380 in words is "one billion, sixty-one million, nine hundred fifty-five thousand, three hundred eighty".