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381337069 = 1907199967
BaseRepresentation
bin10110101110101…
…011110111101101
3222120112221010011
4112232223313231
51240110241234
6101501213221
712310211611
oct2656536755
9876487104
10381337069
11186289203
12a7861211
1361008949
1438907341
1523728b64
hex16babded

381337069 has 4 divisors (see below), whose sum is σ = 381538944. Its totient is φ = 381135196.

The previous prime is 381337057. The next prime is 381337127. The reversal of 381337069 is 960733183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 381337069 - 211 = 381335021 is a prime.

It is a super-2 number, since 2×3813370692 = 290835920387021522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381337969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98077 + ... + 101890.

It is an arithmetic number, because the mean of its divisors is an integer number (95384736).

Almost surely, 2381337069 is an apocalyptic number.

It is an amenable number.

381337069 is a deficient number, since it is larger than the sum of its proper divisors (201875).

381337069 is a wasteful number, since it uses less digits than its factorization.

381337069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201874.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 381337069 is about 19527.8536711027. The cubic root of 381337069 is about 725.1641762162.

The spelling of 381337069 in words is "three hundred eighty-one million, three hundred thirty-seven thousand, sixty-nine".

Divisors: 1 1907 199967 381337069