1554364157 has 4 divisors (see below), whose sum is σ = 1573091520. Its totient is φ = 1535636796.

The previous prime is 1554364153. The next prime is 1554364159. The reversal of 1554364157 is 7514634551.

It is a happy number.

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: 7514634551 = 103 ⋅72957617.

It is a cyclic number.

It is not a de Polignac number, because 1554364157 - 2² = 1554364153 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 (1554364153) 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, 9363557 + ... + 9363722.

It is an arithmetic number, because the mean of its divisors is an integer number (393272880).

Almost surely, 2^1554364157 is an apocalyptic number.

It is an amenable number.

1554364157 is a deficient number, since it is larger than the sum of its proper divisors (18727363).

1554364157 is an equidigital number, since it uses as much as digits as its factorization.

1554364157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18727362.

The product of its digits is 252000, while the sum is 41.

The square root of 1554364157 is about 39425.4252608643. The cubic root of 1554364157 is about 1158.3796632344.

The spelling of 1554364157 in words is "one billion, five hundred fifty-four million, three hundred sixty-four thousand, one hundred fifty-seven".