1957012349 has 4 divisors (see below), whose sum is σ = 1957210464. Its totient is φ = 1956814236.

The previous prime is 1957012327. The next prime is 1957012373. The reversal of 1957012349 is 9432107591.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9432107591 = 569 ⋅16576639.

It is not a de Polignac number, because 1957012349 - 2⁸ = 1957012093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1957011349) 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, 83417 + ... + 104270.

It is an arithmetic number, because the mean of its divisors is an integer number (489302616).

Almost surely, 2^1957012349 is an apocalyptic number.

It is an amenable number.

1957012349 is a deficient number, since it is larger than the sum of its proper divisors (198115).

1957012349 is a wasteful number, since it uses less digits than its factorization.

1957012349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198114.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 1957012349 is about 44238.1322955660. The cubic root of 1957012349 is about 1250.8287515353.

The spelling of 1957012349 in words is "one billion, nine hundred fifty-seven million, twelve thousand, three hundred forty-nine".