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1801400054 = 210918314513
BaseRepresentation
bin110101101011111…
…0010111011110110
311122112122121022112
41223113302323312
512142124300204
6454430131022
762432435126
oct15327627366
94575577275
101801400054
11844930583
12423350a72
132292903bc
1413135cc86
15a823326e
hex6b5f2ef6

1801400054 has 16 divisors (see below), whose sum is σ = 2728983840. Its totient is φ = 891751680.

The previous prime is 1801400033. The next prime is 1801400057. The reversal of 1801400054 is 4500041081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801400057) 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, 396902 + ... + 401414.

It is an arithmetic number, because the mean of its divisors is an integer number (170561490).

Almost surely, 21801400054 is an apocalyptic number.

1801400054 is a deficient number, since it is larger than the sum of its proper divisors (927583786).

1801400054 is a wasteful number, since it uses less digits than its factorization.

1801400054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6455.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 1801400054 is about 42442.9034586467. The cubic root of 1801400054 is about 1216.7557029814.

The spelling of 1801400054 in words is "one billion, eight hundred one million, four hundred thousand, fifty-four".

Divisors: 1 2 109 218 1831 3662 4513 9026 199579 399158 491917 983834 8263303 16526606 900700027 1801400054