1254671957 has 8 divisors (see below), whose sum is σ = 1564266432. Its totient is φ = 977666400.

The previous prime is 1254671941. The next prime is 1254671981. The reversal of 1254671957 is 7591764521.

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 1254671957 - 2⁴ = 1254671941 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 (1254671987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8147144 + ... + 8147297.

It is an arithmetic number, because the mean of its divisors is an integer number (195533304).

Almost surely, 2^1254671957 is an apocalyptic number.

It is an amenable number.

1254671957 is a deficient number, since it is larger than the sum of its proper divisors (309594475).

1254671957 is a wasteful number, since it uses less digits than its factorization.

1254671957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16294459.

The product of its digits is 529200, while the sum is 47.

The square root of 1254671957 is about 35421.3488873589. The cubic root of 1254671957 is about 1078.5577333015.

The spelling of 1254671957 in words is "one billion, two hundred fifty-four million, six hundred seventy-one thousand, nine hundred fifty-seven".