1951348149 has 12 divisors (see below), whose sum is σ = 2834188812. Its totient is φ = 1293710400.

The previous prime is 1951348121. The next prime is 1951348153. The reversal of 1951348149 is 9418431591.

1951348149 is a `hidden beast` number, since 19 + 513 + 4 + 81 + 49 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 483692049 + 1467656100 = 21993^2 + 38310^2 .

It is not a de Polignac number, because 1951348149 - 2¹⁷ = 1951217077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1951348249) 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, 597312 + ... + 600569.

It is an arithmetic number, because the mean of its divisors is an integer number (236182401).

Almost surely, 2^1951348149 is an apocalyptic number.

It is an amenable number.

1951348149 is a deficient number, since it is larger than the sum of its proper divisors (882840663).

1951348149 is a wasteful number, since it uses less digits than its factorization.

1951348149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198068 (or 1198065 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 1951348149 is about 44174.0664757050. The cubic root of 1951348149 is about 1249.6208234451.

The spelling of 1951348149 in words is "one billion, nine hundred fifty-one million, three hundred forty-eight thousand, one hundred forty-nine".