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1831490745007 = 72113397942013
BaseRepresentation
bin11010101001101101010…
…110101111001010101111
320111002101201221202112211
4122221231112233022233
5220001343112320012
63521213014511251
7246215022320200
oct32515526571257
96432351852484
101831490745007
11646804862490
12256b56665527
1310392a40bb31
1464904bcb5a7
153299449e6a7
hex1aa6d5af2af

1831490745007 has 12 divisors (see below), whose sum is σ = 2324192337576. Its totient is φ = 1427135645040.

The previous prime is 1831490744891. The next prime is 1831490745017. The reversal of 1831490745007 is 7005470941381.

It is not a de Polignac number, because 1831490745007 - 211 = 1831490742959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1831490745017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1698970468 + ... + 1698971545.

It is an arithmetic number, because the mean of its divisors is an integer number (193682694798).

Almost surely, 21831490745007 is an apocalyptic number.

1831490745007 is a deficient number, since it is larger than the sum of its proper divisors (492701592569).

1831490745007 is a wasteful number, since it uses less digits than its factorization.

1831490745007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3397942038 (or 3397942031 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 1831490745007 in words is "one trillion, eight hundred thirty-one billion, four hundred ninety million, seven hundred forty-five thousand, seven".

Divisors: 1 7 11 49 77 539 3397942013 23785594091 37377362143 166499158637 261641535001 1831490745007