1907138149 has 8 divisors (see below), whose sum is σ = 2307797568. Its totient is φ = 1538531520.

The previous prime is 1907138141. The next prime is 1907138201. The reversal of 1907138149 is 9418317091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1907138149 - 2³ = 1907138141 is a prime.

It is a super-2 number, since 2×1907138149² = 7274351838742292402, 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 (1907138141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8013067 + ... + 8013304.

It is an arithmetic number, because the mean of its divisors is an integer number (288474696).

Almost surely, 2^1907138149 is an apocalyptic number.

It is an amenable number.

1907138149 is a deficient number, since it is larger than the sum of its proper divisors (400659419).

1907138149 is a wasteful number, since it uses less digits than its factorization.

1907138149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16026395.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 1907138149 is about 43670.7928597593. The cubic root of 1907138149 is about 1240.1114513508. Note that the first 3 decimals are identical.

The spelling of 1907138149 in words is "one billion, nine hundred seven million, one hundred thirty-eight thousand, one hundred forty-nine".