1061854029940 has 36 divisors (see below), whose sum is σ = 2451039927588. Its totient is φ = 386128737280.

The previous prime is 1061854029931. The next prime is 1061854029997. The reversal of 1061854029940 is 499204581601.

It can be written as a sum of positive squares in 2 ways, for example, as 220473446116 + 841380583824 = 469546^2 + 917268^2 .

It is a super-2 number, since 2×1061854029940² (a number of 25 digits) 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 11 ways as a sum of consecutive naturals, for example, 219388909 + ... + 219393748.

It is an arithmetic number, because the mean of its divisors is an integer number (68084442433).

Almost surely, 2^{1061854029940} is an apocalyptic number.

1061854029940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061854029940 is an abundant number, since it is smaller than the sum of its proper divisors (1389185897648).

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

1061854029940 is a wasteful number, since it uses less digits than its factorization.

1061854029940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438782688 (or 438782675 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 1061854029940 in words is "one trillion, sixty-one billion, eight hundred fifty-four million, twenty-nine thousand, nine hundred forty".